THE

QUARTERLY JOURNAL

OF THE

GEOLOGICAL SOCIETY OF LONDON.

EDITED BY

THE ASSISTANT-SECRETARY OF THE GEOLOGICAL SOCIETY.

Quod si cui mortalium cordi et curm sit non tantum inventis hmrere, atque iis uti, sed ad ulteri~r~ penetrate; atque non disputaudo adversarium, sed opere naturam vincere ; denique non beUeet probabiliter opinari, aed certo et ostensive scire ; tales, tanquam veri scientiarum fllii, nobis (si videbituz) le adjun~anto --Notum Organum, Pr~fatio.

V O L U M E T H E FIFTIETH.

1894.

LONDON :

LONGMANS, GREEN, .~ND CO. PARIS : FRIED. KLINCKSIECK, II RUE DE L I L L E ; F . SAVY, 77 BOULEVARD ST, OEEMAIN ;

LEIPZIG z T. O . W E I G E L .

SOLD A L S O AT THE A - P A R M N T S OF TWE SOCIETY,

XDO~OX(~IT.

Kfzt

O~

O FI~IOEI~ &

O~

GEOLOGICAL SOCIETY OF LONDON.

Elected February 16th, 1894.

P r m ~ m t . Henry Woodward, LL.D., F.R.S.

Prof. A. H. Green, M.A., F.ILS. ~. J. Hiade, Ph.D.

J. E. Man', Esq., M.A., F.R.S.

~it~rm~tnt~. Prof. J. W. Judd, F.R.$. R. Lydekker, Esq., B.A., F.ILS.

b ~ t r e t a t ~ . [ J. J. H. Teall, Esq., M.A., F.R.S.

z~'ordgu ~cr~ ta rO. J. W. Hulke, Esq,, F.R.S.

Prof. T.|Wiltshire, M.A., F.L.S.

H. Bauerman, Esq. "W. T. Blanford, LL.D., F.R.S. Sir John Evans, K.C.B., LL.D., F.R,S.,

F.L.S. Prof. A, H. Green, M.A., F.R.S. J. W. Gregory, D.Sc. Alfred Harker, Esq., M.A. G. J. Hinde, Ph.D. T. V. Holmes, Esq. W. H. Hudleston, Esq., M.A., F.R.S.,

F.L.S. J. W. Hulke, Esq., F.R.S. Prof. J. W. Judd, F.R.S.

Prof. C. Lapworth, LL.D., F.R.S, It. Lydekker, Esq., B.A., F.R.S. Lieut.-General C. A. MeMahon. J. E. Mart, Esq., M.A., F.R.S. H. W. Monckton, Esq., F.L.S. Clement Reid, Esq., F.L.S. F. Rutley, Esq. J. J. H. Teall, Esq., M.A., F.R.S. Prof. T. Wiltshire, M.A., F.L.S. Rev. H. H. Winwood, M.A. Henry Woodward, LL.D., F.1LS. Horace B. Woodward, Esq.

~[~i~tant~bctr~tar~, ~ I ~ , Kibrarian, antf Curator . L. L. Belinfante, B.Sc., B. ~s T,.

~[J~iCtant~ in GiHce, ~s aulJ ~t~uctum. w. Rupert Jones. Francis E. Brown.

�9 TABLE OF CONTENTS.

Page ABBOTT, W. J. L~.wIS, Esq. The Ossiferous Fissures in the Valley

of the Shode, near Ightham, Kent . . . . . . . . . . . . . . . . . . . . . . . . 171

ANDREWS, the Rev. W. R., and A. J. JUKES-BROWNI~ Esq. The Put'beck Beds of the Vale of Wardour . . . . . . . . . . . . . . . . . . . . . . 44

A.I~NOLD-~BI~MROSE, H. H., Esq. On the Microscopical Structure of the Carboniferous Dolerites and Tufts of Derbyshire. (Plates XXIV. & XXV.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603

�9

B~RNARD, H. ~[., Esq. The Systematic Position of the Trilobites. 411

Bo~c~cEY, Prof. T.G. On some Cases of the Conversion of Compact Greenstones ' into Schists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279

~ . Mesozoic Rocks and C1Tstalline Schists in the Lepontine Alps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285

, and Miss C. A. RAISIN. On the Relations of some of the Older Fragmental Rocks in North-western Caernarvonshire . . 578

B~oD~E, the Rev. P.B. On the Discovery of Molluscs in the Upper Keuper at Shrewley in Warwickshire . . . . . . . . . . . . . . . . . . . . . . 170

BRSGO~R, Prof. W . C . The Basic Eruptive Rocks of Gram (A Preliminary Notice.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

C~rAP~AN, F~.DERICX, Esq. The Bargate Beds of Surrey and their Microscopic Contents. (Plates XXXIII . & XXXIV.) . . 677

DAvrEs, A. M., Esq., and Dr. J . W . G ~ r The Geology of Monte Chaberton . . 303

DAwso~r CHARLES, Esq. On Deposits from Snowdrift, with especial Reference to the Origin of the Loess and the Pre- servation of Mammoth-remains . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472

a 2

iv T A B L E O F C O N T E N T S .

P a g e

DAVCSON, Dr. GEORQ~'~ 1~I. Notes on the Occurrence of ~[ammoth- remains in the Yukon District of Canada and in Alaska . . . . . . 1

DAwson, Sir J . W . Note on the Genus Z'aiadites, ~s occurring in the Coal Formation of Nova Scotia. (Plate XX.) . . . . . . . . 435

DRAPXR, DAVZ~), Esq. Notes on the Geology of South-eastern Africa. (Plates XXII. & XXIII.) . . . . . . . . . . . . . . . . . . . . . . . . 548

. . . . . . The Occurrence of Dolomite in South Africa . . . . . . . . . . . . 561

EvANs, Dr. J. W. The Geology of Matto Grosso (particularly the Region drained by the Ut~]~er Paraguay). (Plate VIII.) .. 85

GEIXIE, Sir ARCttlI~ALD. On the Relations of the Basic and Acid Rocks of the Tertiary Volcanic Series of the Inner Hebrides. (Plates XIII. & XIV.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

, and J. J. H. TF~ALL, Esq. On the Banded Structure of some Tertiary Gabbros in the Isle of Skye. (Plates XXVI.- XXVIII .) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 645

GRF~GORY, Dr. J. ~,V. The Waldensian Gneisses and their Place in the Cottian Sequence. (Plate XV.) . . . . . . . . . . . . . . . . . . . . . . 232

. Contributions to the Geology of British :East Africa.-- Part I. The Glacial Geology of Mount Kenya . . . . . . . . . . . . . . 515

�9 ,

~ , and A. M. DAvI~s~ Esq. The Geology of Monte Cha- berton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303

�9

G~a~SLF~Y, W. S., Esq. Cone-in-cone: how it occurs in the De- vonian (?) Series in Pennsylvania (U.S.A.); with Further Details of its Structui.e~ Varieties, etc. (Plates XXXV. & XXXVI.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 731

ttAR~ER~ AT.FREI), Esq. Carrock Fell : a Study in the Variation of I~rneous Rock-masses.--Part I. The Gabbro. (Plates XVI. & XVII.} . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31]

tIrND, Dr. W~EF~LTO~. Appendix to Sir J. W. Dawson's Note on the Genus .hTaiadites. (Plate XX.) . . . . . . . . . . . . . . . . . . . . . . . . 437

HOLmEs, T. V , Esq. :Further Notes on some Sections on the New :Railway from Romford to Upminster, and on the Relations of the Thames Valley Beds to the Boulder Clay . . . . . . . . . . . . . . 443

I-ItrLL, Prof. :EDWARD. Artesian Bol~ng at New Lodge, near Windsor Forest (Berks) �9 : : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

JONES, Prof. T. RUPERT. On the Rhmtic and some Liassic Ostra- coda of Britain. (Plate IX.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156

TABLE OF CONTENTS. V

Page JUICES-BROWNE, A. J., and the Eev. W. R. ANDREWS. The Pur-

be'ck Bed's of the Vale of Wardour . . . . . . . . . . . . . . . . . . . . . . . . 44

, and W. ~V~ITAKER, Esq. On Deep Borings at Cnlford and Winkfield; withNbtes bh" th6se" ~t Ware and Cheshunt . . 488

KYNASTON, HERBERT. On the Stratigraphical, Lithological, and Palmont01ogical :Features of the Gbsau Beds of the Gosau Dis- trict~ in the Austrian Salzkammergut . . . . . . . . . . . . . . . . . . . . . . 120

LAFFAlV r G. B., Esq. See below.

Lv.ESON. Dr. J. R., and G. B. LAFFAN, Esq. On the Geology of the PlelstoceneDeposits in the ~Valley of the Thames at 'Iwicken- ham~ with Contributions to the Fauna and Flora of the ~Period. 453

LYo~ws, Capt. H.G. On the Stratigraphy and Physiography of the Libyan Desert of Egypt. (P la te X XI.) . . . . . . . . . . . . . . . . . . . . 531

McsIAHON, Lieut.-Gem C.A. Notes on some Trachytes, Metamor- phosed Tufts, and other Rocks of Igneous Origin on the Western Flank of Dartmoor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338

MONCKTON, It. ~V., Esq. On a Picrite and other Associated Rocks at. Barnton, near Edinb.urgh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

NEWTON, E. T,,Esq. The Vertebrate Fauna collected bv Mr. Lewis Abbott from the Fissure near Ightham, Kent. (Plates X.-XII.) 188

OLDHA=~, R. D., Esq. A Comparison of the Permian Breccias of the Midlands with the Upper Carboniferous Glacial Deposits of India and Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463

PEACH, B.N.,Esq. Additions to the Fauna of the Olenellus.zone of the ~orth-west ttighlands. (Plates XXIX.-XXXII.) . . . . . . . . 661

RAISIN, ~Iiss C. A., and Profi T. G. BONHEY. On the Relations of some of the Older Fragmental Rocks in North-western Caer- narvonshire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 578

Ross, ~V. J. C., Esq. The Geology of Bathurst (.New South Wales). 105

RUI"LEY, F., Esq. On the Sequence of Perlitic and Spherulitic Struc- tures : a Rejoinder to Criticism. (Plate I.) . . . . . . . . . . . . . . . . 10

(P'lat One the Orion of Certain Novaculites and Quartzites. XIK.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

TEAL'I;, J. J. tI.;Esq:, and Sir A. GEIKIE. On the Banded Structure of some Tertiary Gabbros in the Isle of Skye. (Plates XXVI. - XXVIII . ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 645

THOMI'SON~ BEEBY, Esq. Landscape Marble . . . . . . . . . . . . . . . . . . 393

vi TABLE OF CONTENTS.

Page YV'ALFORD~ E. A., ESq. On some Bryozoa from the Inferior Oolite

of Shipton Gorge (Dorset). Part II. (Plates II.-IV.) . . . . . . 72

. On Cheilostomatous Bryozoa from the Middle Lias. (Plates u . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

WATTS~ W. W., Esq. Note on the Occurrence of Perlitie Cracks in Quartz. (Plate XVIII.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367

WHITXKER, W. W.,, Esq., and A. J. JUK~S-BROWN~, Esq. On Deep Borings at Culford and Winkfield, with Notes on those at Ware and Cheshunt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 488

WOODS, ti. , Esq. The Igneous Rocks of the Neighbourhood of Builth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 566

PROCEEDINGS.

Proceedings of the Meetings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . :, :41

Annual Report . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xo

List of Foreign Members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 9

List of Foreign Correspondents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~o

List of Wollaston Medallists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2:

List of Murchison Medalllsts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . z3

List of Lyell Medallists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

List of Bigsby Medallists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . z5

Applications of the Barlow-Jameson Fund . . . . . . . . . . . . . . . . . . . . . . 25

Financial Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . z5

Award of the Medals, etc . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3z

Anniversary Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4x

Alteration of Sect. u Art. 6 of the Bye-laws . . . . . . . . . . . . . . . . x 50

Additions to the Library (with Bibliography) . . . . . . . . . . . . . . . . . . 15r

TABLE OF CONTENTS.

Pag$ A~FORD C. J.~ Esq. On Auriferous Rocks from Mashonaland . . . . $

EDWARDS, D. T., Esq. Boring on the Booysen Estate (VCitwaters- rand) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

JOHNSTON-LAvrS, Prof. H. J. Enclosures of .Quartz in Lava of Stromboli, etc., and the Changes in Composition produced by them ..................................................

LYDEKKER~ R., Esq. On Argentine Fossil Vertebrates .......... :46

I~ONCKTON~ H. W., Esq_. On a Variety of Ammonltes (Stephanoceras) subarmatus~ Young, from the Upper Lias of Whitby . . . . . . . . §

PARXr~soH~ JAMES, Esq. Leigh Creek Jurassic Coal-Measures of South Australia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

�9 Physical and Chemical Geology of the Interior of Australia 7

SAWYER, .4.. R.~ Esq. On Rock-specimens from Mashonaland . . . . :44

LIST OF THE FOSSILS D E S C R I B E D A N D F I G U R E D

I N THIS V O L U M E .

[In this List, those Fossils the names of which are pr in ted in Roman ~ype have been previously described.]

'Name of Species. ] F o r m a t i o n . I. Locality. I Page

FORAMINIFERA.

Ammodi2cus pleurotomarioides. Pl. xxxiv, fig. 3 a, b, c . . . . . . . . . . . . . . . . . .

Bu]imina polystropha. P1. xxxiv. fig. 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Ehrenbergina pupa. P1. xxxiv. fig. 6 a, b . . . . . . . . . . . . . . . . . . . . . . . . . . .

Frcndicular ia brizmformis. P1. xxxiv, fig. 9 a, b . . . . . . . . . . . . . . . . . . . . .

Haplophragmium neocomiauum. P1. xxxiv, fig. 2 a, b . . . . . . . . . . . . . . .

JL~ena Meyeriana. P1. xxxiv. fig. 7a, b . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lingulina semiornata, var. crassa P1. xxxiv, fig. 8 a, b . . . . . . . . . . . . . .

Patellina an~iqua. P1. xxxiii, fig. , 1 2 a , b, c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . planisTirina obscura. PI. xxxiv.

fig. I a, b, c . . . . . . . . . . . . . . . . . . . . . . . . . . . Polymorphina concava, var. denti- I

~nar.qinata. P1. xxxiv, fig. 14 a, b !

.frondicularioides. P1. xxxiv, i fig. 13 a, b . . . . . . . . . . . . . . . . . . . . . . . . . .

I �9 rhabdogonioides. PI. xxxiv. fig. 12 a, b . . . . . . . . . . . . . . . . . . . . . . . . . . .

Trochammina squamata, var. lira- 1 bata. P1. xxxiv, fig. 4 a, b, c ... I

Truncatul ina falcata. P1. xxxiv. fig. 15 a, b, c . . . . . . . . . . . . . . . . . . . . . . .

~'aginulina nevcomia~a. P1. xxxiv. figs. 10a, b, l l . . . . . . . . . . . . . . . . . . . . .

• Bargate Beds . . . .

I "

(Li t t le ton . . . . . . . . .

Littleton, Hollo- way Hill, etc.

Li t t le ton . . . . . . . . .

Litt leton, Chil- worth, etc . . . .

Lit t leton . . . . . . . . .

697

701

7O4

695

706

, 708

I Iol loway lI i l l . 718

693

|

717 Lit t le ton . . . . . . . . . .{

716

~(716 Littleton, Hol lo-

way Hill , etc. 697

Hol loway Hil l i1[ 721

Lit t teton . . . . . . . . 711

F O S S I L S D : E S C R I B E D A N D F I G U R E D .

Name of Species. Formation. I Locality. I P a g e

E N T O M O S T R A C A .

( Ostraeoda.)

Cythere reticostata. P1. ix. fig. 10. ? Lower Lias ... vesiculosa. PI. xxxiii, fig. 1 a,

b, e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bargate Beds ... Wilsoni. P1. ix. fig. 11 a, b, c

, sp. ? Pl. ix. fig. 12 . . . . . . . . . . . . ~ ?Lower Lias ... Cytheridea bicarinata, ear. nodu- 1

/osa. P1. xxxiii, fig. 2 a, b, e ...

t �9 bipapillata. PI. xxxiii, fig. 5 a, Bargate Beds ... Lit t leton . . . . . . . . . b ~ c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ellipsoides. P1. ix. fig. 6 a, "t IAas J ?Westbury-on- b, e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . J " . . . . . . . . . . . [ Severn.

fenestrata. P1. xxxiv, fig. 4 . Bargate :Beds... 21/Ioorei. P1. ix. figs. 7 a, b, e,

8 a, b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Rhmtie ............ vellieata. P1. xxxiii, fig. 3a ,

b, e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bargate Beds ... , sp. P1. ix. fig. 9 . . . . . . . . . . . . . . . )

Cyther~tero~ JBrodiei. PI. ix. / ?:Lower IAas ... fig. 13 a, b, e, d . . . . . . . . . . . . . . . . . . . . .

-- costulifemm. P1. xxxi i i .}

fig. 7 a, b, c . . . . . . . . . . . . . . . . . . . . . . . . . . . Bargat Beds Lit t leton . . . . . . . . . reticulosum. PI. xxxiii, fig. 6 a,

b ~ c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Darwinula globosa. P1. ix. figs. 3, ] 4a , b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

, var. stricta. P1. ix. Lias . . . . . . . . . . . . . . . Linksfleld . . . . . . fig. 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

liassica. P1. ix. fig. 1 a, b, e . - , ear. major. PI. ix. I Rhmtie ............ Pylle Hill ......

fig. 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

? Bedminster ...

Li t t le ton . . . . . . . . .

? Bristol . . . . . . . . .

Li t t le ton . . . . . . . . .

Beer Croweombe & Long I tchington.

Lit t leton . . . . . . . . .

? Bristol . . . . . . . . .

16ff

688 167 167

1tt4 690

165

69O

167

692

163

164 162

163

TRILOBITA.

Olenelloides armatus. P1. xxxli. ) figs. 1-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Olenellus #i#as. Fig. 1, p. 667. I P1. m i i . figs�9 13, 14 . . . . . . . . . . . . . . . I intermedius. P1. xxxii, fig. 7 .

Lapworthi . PI. xxix. fags. 1, I 2, 2 a ; pl. xxx. fig. 7 ; pl. xxxii. } Lower Cambrian fig. 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I

3 -~ ear. elo~a~us. P1. xxix. I llgs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

I reticulatus. P1. xxx. figs. 1-6, 8 -14 ; pl. xxxi. figs. 1-7 . . . . . . . . . )

Kenlochewe ...

r

i 669

666 666

662

665

FOSSILS DESCRIBED AND FIGURED. x i

Name of Species. I Format ion . Locali ty. I Page

Cisternifera dausa. 1-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

, . . incons~ans. PI. v. riga. 1-8, 16, 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - - - ~ , forma prima. PI. v. figs. 9 -13 . . . . . . . . . . . . . . . . . . . . . . . . . . .

- - - - , forms secunda. P1. vi. figs. 14-22 . . . . . . . . . . . . . . . . . . . . . . . . . . .

- - ~ , forma tertia. PI. v. figs. 18--21 ; pl. vi. figs. 1-4 . . . . . .

. . . . , f o rms quarts. PI. vi. figs. 5 -13 . . . . . . . . . . . . . . . . . . . . . . . . . . .

PTgensia amphoralis. P1. ii. gs. 5, 8 ; P1. iii. figs. 21-24 . . . . . .

�9 galeata. Pl. iii. figs. 19, 20, 25-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- - - j u g a t a . Pl. ii. figs. 9, 10; P1. iv. figs. 6-13, 18-21 . . . . . . . . . . . .

- - , vat . bi-gibbosa. Pl. ii. fig. 11 ; P1. iv. figs. 14, 15 . . . . . .

major. P1. ii. figs. 3, 4 ; PI. iii. rigs. 11-18 . . . . . . . . . . . . . . . . . . . . . . . . . . .

minima. P1. ii. fig. 12; P1. iii. rigs. 5 -10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

nidulata. PI. ii. figs. 1, 2 PI. iii..tiffs. 1, 2, 3, 4

porifera. PI. ii. flg: "6" j "i~'l"i;, figs. 1-5, 16, 17 . . . . . . . . . . . . . . . . . . . . .

POLYZOA.

( Cheilostomata. )

PI. vii. rigs.

J Middle Lias ...! King's Sut ton ..

. Infer ior Oolite I

Shipton Gorge

82

8O

8O

81

82

82 75, 76

76

76

76

74

74

73

75

LAMELLIBRANCHIATA.

( Asiphonida ; l~,tegroTallialia. )

Anthraeomya arenacea. PI. x x f ] rigs. 4 - 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ! ]

= = elongata. Pl. xx. rigs. 7-10 hevis. PI. xx. fig. 12 . . . . . . . . . [

�9 ovalis. Pl. xx. fig. 13 . . . . . . . . . ] ~ Coal Measures Carbonicola (Anthracosia)angulata.[ |

P1. xx. fig. 14 . . . . . . . . . . . . . . . . . . . . . . . . r I Naiadites carbonarius. P1. xx.

rigs. 2, 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i )

South Joggins. . .

(

1 ~ 44O 441 441

L44o

~kM PHIB IA.

Bufo vulgaris. Pl. x. fig. 4 . . . . . . . . . ][~anatemporaria. P l . x . figs. l - 3 ) P l e i s t o c e n e . . . . . . I l g h t h a m . . . . . . . . . l { 190189

~EPTILIA.

Anguis fragilis. PI. x. figs. 5-7 ...I

...... I ......... If;: rigs. 8, 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

~di POSSILS DESCRIBED AND F I G U R E D .

Name of Species. Formation. I Locality. I Page

AYES.

Alauda arvensis. PI. x. figs. 10-12[ ~ ...... Anas boseas? P1. x. figs. 16,17.. .11 Buteo ? P1. x. fig. 18 . . . . . . . . . . . . . . . ~ Pleistocene Larus ? P1. x. fig. 15 . . . . . . . . . . . . . . . I ~axicolacenanthe ? Pl.x. figs. 13,14 )

Igh tham ... . . . . . .

[191 1191

J 191 192

L191

~AMMALIA,

( I~seet i vor a. )

Sorex pygmmus. Pl. xi. fig. 2 .... *.] . . . . . vulgaris. P1. xi. fig. 1 ...... , }P le i s~cene ...... ] Ightham . ......... (192192

( Cheiroptera.)

Yespertilio Nattereri. P1. xi. fig. 31 Pleistocene ...... I Ightham ..... . . . . [ 192

( Rodentia.)

Lagomys pusillus. P1. xi. fig. 6 ...r~ Lepus timidus. P1. xi. figs. 4, 5... H Mierotus (= Arvieola) gregalis.ll

PI. xi. fig. 12 ........................ II - - ( ) ratticeps. PI. xi. fig. 11] ~. Pleistocene ...... Mus Abbotti. PI. xi. fig. 8 . . . . . . . . . I I - - sylvatieus. Pl. xi. fig. 7 ...... [ I Myodes lemmus. P1. xi. fig. 9 -"[ I

torquatus. P1. xi. fig. 10 ""/J

Ightham ... . . . . . .

I 194 193

195 191

~ 196 196

(Ungulata.)

Rangifer ( = C e r v u s ) tarandus.[~ ...... I [ PL xi. fig. 16 . . . . . . . . . . . . . . . . . . . . . . . . I | 199

Rhinoceros antiquitatis. P1. xi.[ [Pleistocene Ightham ... . . . . . . figs. 13-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . J J 1 198,

(Carnivora.)

Oanis lagopus. PI. xii. figs. 5-9 ...'~ vulpes. P1. xii. figs. 1-4 ...... /

ttyrena erocuta ? PI. xii. fig. 11...I | Mustela robusta. P1. xi. figs. 17, 18 i ~ Pleistocene .....

.- vulgaris, var. minuta. P1. xi. I figs. 19, 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . I

Ursus arctos ? PI. xii. fig. I0 ...... )

1(2o2

I | f l 2Ol I L2ol

E X P L & N • O F T H E P L A T E S .

PLATE PAGE J~ PERLITIC AND SPIIERULITIC STRUCTURES, to illustrate Mr. F.

I. L Rutley's paper on those structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

II.-IV. ,f INFERIOR OOLITE BRYOZOA, to illustrate Mr. E. A. Walford's L paper on those fossils from Shipton Gorge, Dorset . . . . . . . . . 72

V. (LIASSlC A~D OOLITIC BRYOZOA, and VI . -VII . ~ LIASSIC BRYOZOA, to illustrate Mr. E. A. Walibrd's paper on

[ Cheilostomatous Bryozoa from the Middle Lias . . . . . . . . . . . . 79

f GEOLOGICAL MAP OF A PORTION OF SOUTII-EASTERN MATTO v i i i . ~ GRosso, to illustrate Dr. J. W. Evans's paper on the geo-

logy of that province . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . 85

J l~HmTIC AND I"JIASSIC OSTRACODA~ to illustrate ProL T. Rupert IX. ~ Jones's paper on those fossils in Britain . . . . . . . . . . . . . . . . . . . . . 156

X. .AMPHIBIA, REPTILES, AND BIRDS FRO~t IGHTHAM, I SHREWS, BAT, I~ODENTS, UNGULATES, AND CARNIVORS FROM

XI. ~. IGIITIIAM, { CARNIVORES. FROM IaHTHAM, to illustrate ~Ir. :E. T. Newton's

X I. paper on the Vertebrate Fauna collected from the Fissure �9 near that locality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

�9 (BANDED (~'ABBRO IN .TERTIARY VOLCANIC SERIES, RIDGE NORTII | OF DRU[M AN EIDHNE, GLEN SLIGACnAN, SKYE, and' DYKE

X I I I . - ~ OF GR&NOPHYRE INTERSECTING TIIE G2kBBROS, tO illustrate XIV. Sir Archibald Geikie's paper on the Relations of the Basic

I and Acid Rocks of the Tertiary Volcanic Series of the Inner Hebrides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

['Microscopic sections of G.~ISSES, .~kFLITES, AND CONTACT- YV j ROCKS, to illustrate Dr. J. W. Gregory's paper on the

" / Waldensian Gneisses and their Place in the Cottian Ee- L quence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232

[" SKETCII-]~I&P OF PART OF TIlE CARROCK ~ELL DISTRICT~ SHOW- X V I . - J ING YARIATIO~ OF GABBRO, and microscopic sections of XVXI. ~ CARROCK F~LL GABBRO, to illustrate Mr. Alfred Harker's

I. paper on that rock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

f Mieroscopie sections of PEI~LITIC PITCIISTONE FROM SAN'DY XVIIL BRAES, tO illustrate Mr. W. W. Watts's paper on the

Occurrence of Perlitie Cracks in Quartz . . . . . . . . . . . . . . . . . . . . . 367

xiv EXPLANATION OF THE PLATES.

PLATE PAGE ( Microscopic seehions of NOVACULITES, QUARTZITES, AND DoLe-

~. ~ MITES, to illustrate ]Kr. F. Rutley's paper on the origin of ( the two former rocks ................................................ 377

f COAL-]~EASURE SHELLS FROM THE SOUTH ~'OGGINS, to illustrate Sir J. W. Dawson's paper and Dr. Wheelton Hind's ap-

XX. pendix on the genus _Naiadites, as occurring in the Coal- formation of Nova Scotia . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435

r GEOLOGICAL MAP OF THE LIBYAN DESERT, to illustrate Capt. XXI. ~ H.G. Lyons's paper on the Stratigraphy and Physiography

( of that Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 531

XXII . 'DIAGRAMMATIC SECTIONS OF TIlE DRAKENSBEIIG AND THE HIGH- VELD PLATEAU, AND FROM ]~ONT-Aux~ DRAKENS o BERG, TO ST. LUCIA BAY ,

XXIH.~ SECTIO~ FROM HARTEnEEsT-FoNTmN (TRANSVAAL) TO VREDE- FORT (Os~NGE FREE STATE), to illustrate Mr. D. Draper's ~,apers on the Geology of South-eastern Africa and on the uccurrence of Dolomite in South Africa . . . . . . . . . . . . . . . 548, 561

XX~V.-~ CARBONIFEROUS DOLERITES AND TUFFS FRO~I DEREYSIIIRE, to XXV. [ illustrate Mr. H. H. Arnold-Bemrose's paper on the micro-

scopical structure of those rocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 603

XXVI. 'FOLDED AND BANDED GABBRO AT DRUIM AN EIDIINE, SKYE, XXVII. GRANULITIC AND FOLIATED GABBRO, TRAVERSED BY LATER vEINS

OF FELSPATHIC GABBRO, and XXVIII . Microscopical sections of BANDED GABBRO OF SKYE, to illus-

trate Sir Archibald Geikie and Mr. J. J. H. Teall's paper on those rocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 645

XXIX. - OLENELLUS, OLENELLOIDES, MESONACIS, AND HOLMIA, to illus- trate Mr. B. N. Peach's paper on the Fauna of the Ole-

XXXII . ~ell~-zone in the North-west Highlands . . . . . . . . . . . . . . . . . . . . . "661

X X X I i T I" BARGATE OSTRACODA, FORAMINIPERA, etc., to illustrate Mr. F. Iry~C~r ~ ~ Chapman's paper on the Bargate Beds of Surrey and their

" ~ Microscopio Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 677

X X X V . - ~ CONE-I~-C0~E, to illustrate 3/ir. W. S. Greeley's paper on XXXVI. l that structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 731

" W O O D C U T S A N D O T H E R I L L U S T R A T I V E FIGURES

BESIDES THOSE IN T H E PIRATES.

Y I G . P A G E

Map of the Christiania Region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Sketch-map of Gra~ (Christiania District) . . . . . . . . . . . . . . . . . . . . . . . . 17

Diagram-section on the Barnton Railway in Barnton Park ...... 39

Geological Sketch-map of the Vale of Wardour . . . . . . . . . . . . . . . . . . 47

1. Beds seen in Woekley Quarry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

f Diagram showing variations in strata between the Cinder-bed �9 [ and the A r c h ~ o n ~ a u s - l i m e s t o n e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7

3. Section along the railway, west of Dinton Station . . . . . . . . . . . . . . . 60

4. Diagram showing the vertical succession of the Purbeck Beds . 64

�9 ' p 1. { Generalized section from the Hills of Ta irapuam to the Allu- vial Tract south of Cuyab~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

,~ f Portion of section on W. bank of Rio Paraguay, Barra dos " ' [ Bugres . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

�9 Geological Sketch-map of Bathurst (N. S. W.) . . . . . . . . . . . . . . . . . . . . . 108

Section across the District of Bathurst (N. S.W.) . . . . . . . . . . . . . . . 109

Map showing the extension of the Gosau Beds in Gosauthal and Russbachthal : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

Diagrammatic section from the Thames Valley, below Maiden- head, to Haslemere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

1. Section from Cotman's Ash to Shingle Hill . . . . . . . . . . . . . . . . . . . . . . . . 174

2 ~ Section across the Shode at Plaxtol, from Shingle Hill to Hurst �9 t Wood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

xvi WOODCUTS AND OTHER ILLUSTRATIVE :FIGURES,

FIG. PAOE

S Section from near Cotman's Ash along the Valley of the Shode 3. [ to Plaxtol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

4. View of the Fissures near Ightham . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

5. Generalized section along one of the fissures . . . . . . . . . . . . . . . . . . . . . 579

6. Plan of one of the keyed Blocks, seen from above .. . . . . . . . . . . . . . 181

1. ,[ Plan of portion of ridge north of Druim an :Eidhne, south of t Glen Sligachan, Skye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222

2. Plan of granophyric dyke, Druim an Eidhne, Skye . . . . . . . . . . . . . . . 225

3. View of felsitic dyke, north of Druim an Eidhne, Skye ......... 226

4. ~ Plan of quartz-felsite dyke and veins traversing gabbro, west t of Druim an :Eidhne, Skye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

(Sketch-map illustrating the distribution of the Waldensian 1. [ Gneisses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238

2. Reproduction of part of Gastaldi's map of the Paradiso ......... 240

3. Inclusion o f ' pietre verdi' in gneiss of Vonzo Valley ... . . . . . . . . . 242

Sketch-map showing distribution of Waldensian Gneisses in the 4. ~ Bussoleno District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246

5. (Section from :Foresto di Sasa across and up the Gerrardo t Valley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248

Junction of gneiss and limestone in a gully north of Col de 6. ~ Vento . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -'249

Gneiss, with included fragments of 'pietre verdi ' series, at 7. Mustione . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250

8. Sketch-map of the gneiss-exposures round Col de Vento ......... 251

9. Veins of gneiss (aplite) in ' pierre verdi' series, Angrogna Valley. 257

1. Schistose dyke by the path to the Griim Alp . . . . . . . . . . . . . . . . . . . . . . . . 279

2. { Section cut from middle part of second dyke by the path to the Griim Alp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 281

1. Section at Altkirehe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 288

2. Section at back of the village of Realp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

3. Section at the top of the Furka Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295

1. Section on north side of the Valley of R. Clos des Morts ...... 305

2. (Crumpled Clos des Morts Limestones carried by thrust-plane on to uncontorted dolomite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Map of the Monte Chaberton Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 309

3. Section through Monte Chaberton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310

WOODCUTS AND OTHER ILLUSTRATIVE YIGUR]AS. XV11

FIG. PAG E

Diagrammatic section across Carrock Fell . . . . . . . . . . . . . . . . . . . . . . . . 314

Sketch-map of Sourton Tors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339

1. Specimen of metamorphosed tuff showing ' corduroy structure'. 352

2. 5~etamorphosed ash on the flank of Cock's Tot . . . . . . . . . . . . . . . . . . 357

3. ]tornblende-sehist, Lizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357

l-6. Perlitic cracks in quartz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371

1-2. Auriferous quartzite from Nondweni, Zululand . . . . . . . . . . . . 388, 389

J--2. Landscape Marble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395, 397

1. l~rotocaris 2~Iar.~hi, ~Valeott . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413

2. Head-shield of Microdiscu8 M e e k i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

3. Youngest st, age of Olenellus asaphoides . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415

4-5. Olenellus asaphoide8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

6. Sao h irsu ta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 417

7. { Diagram showing probable composition of head-shield [of Trilobite] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418

8. Diagram of eye of Aj~,us . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

9. ]Iead-shield of Ole~ellus (Mesonacis) a~aThoides . . . . . . . . . . . . . . . . . . 423

10. Pygidium of Cal~/mene Blumenbachi i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424

11. Specimen of Triar thrus Beck i i showing antennm . . . . . . . . . . . . . . . . . . 425

12. Limb of Tr iar thrus Beck i i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426

Sections through Calymene ~enaria and Apus ( L e p i d u r u s ) 13-14. ~ stdtzbergensis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427

15:16.

17.

I .

2.

3.

1.

2.

3.

u L.

Do. do. do. do . . . . . . . 428

Enrolled Calymeue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 428

Map of Romford District . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444

Section in l~omibrd Cutting, south of Victoria Road Bridge ... 445

Plall showing sewer-cutting in Thames Valley at Twickenham. 453

Section of do. do. do. 455

Sections of sump-holes iu the gravels at Twickenham . . . . . . . . . . . . 456

View of Central Peak of ~ o u n t Kenya . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51(i

Map of S.W. slopes of Central Summit of Ylount Kenya ...... 517

Section through Mount and Lake Hiihnel . . . . . . . . . . . . . . . . . . . . . . . . . . . 519

b

xviii WOODCUTS AND OTHER ILLUSTRATIVE F I 6 U R E S .

FIG. PAGE

4. Terminal )/[oraine of the Lewis Glacier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 522

5. Isobaric Map, showing low-pressure area in :Equatorial At'rica. 529

Geological Sketch-map of neighbourhood of Buil th . . . . . . . . . . . . . . . 568

l. Section south of Tan-y-graig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 572

2. Section seen in road-cutting at back of Pen-cerig ~ouse . . . . . . . . . 575

I. Diagrammatic section along railway, west side of L lyn Padarn. 583

2. Section along slate-railway, east of Llyn Padarn . . . . . . . . . . . . . . . . . . 590

3. ~f The alleged unconformity, by slate-railway east side of Llyn l Padarn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592

4. Sketch-map of part of L lyn Padarn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 594

5. Section across l~oel Goronwy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597

1. Olendlus .qigas, sp. nov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 667

2. Telson of Olenellus and ~Vesonaci~ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 673

Section of siliceous rock with sponge-spicules, etc. (Bargate l. series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682

2. Section of Bargate Limestone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684

3. Section of ~'eocomian Limestone from the Richmond Boring.. . 686

Section through a eone-ln-cone bearing nodule . . . . . . . . . . . . . . . . . . . . . 734

C O R R I G E N D A .

Prec. page 7. line 6 from top, f o r ' South ' read ' North.' Prec. page ]3, lille 15 from top, f o r ' 15 1 7 ' read ' 115 1 7.' Page ~55, line 11 from bottom, fo r ' in the year 1842' read ' abbut the year

1831.' Page 89 (section), l~izama should be to the left, not to the right of the two-

ridged hill. Page 103, line 11 from top, for ' hone l ike ' read ' bone-like.' Page 103 (Expla~ation ot' P1. VIII . ) , for ' Ci r ipuru ' read ' Ciripiru. ' Plate VII I . I n the scale of kilometres,.for ' 10, 20, 30 ' read ' 20, 40, 60.' Plate V]I1. I n the key-map of S. America, tile highlands of Brazil are erroneously

represented as consisting of mountain-ranges, whereas they are for the most part gently-undulating table-lands intersected by deep river- valleys.

Page l l0 , line 18 from top, for ' Sa raua ' read ' Tarana. ' Page 117, line 5 from top, for ' m icroseopic ' read ' macroscopic.' Page 173, line 3 from top,. /br ' l ime ' read ' carbonate of lime.' Page 291, note line 1, for ' seciton' read ' section.'