Aliens, Desirable and Undesirable

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<ul><li><p>Aliens, Desirable and UndesirableAlien Flora of Britain by Stephen Troyte DunnReview by: R. Ll. P.The Irish Naturalist, Vol. 15, No. 2 (Feb., 1906), p. 28Published by: Irish Naturalists' Journal Ltd.Stable URL: http://www.jstor.org/stable/25522845 .Accessed: 15/06/2014 12:15</p><p>Your use of the JSTOR archive indicates your acceptance of the Terms &amp; Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp</p><p> .JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact support@jstor.org.</p><p> .</p><p>Irish Naturalists' Journal Ltd. is collaborating with JSTOR to digitize, preserve and extend access to The IrishNaturalist.</p><p>http://www.jstor.org </p><p>This content downloaded from 185.2.32.28 on Sun, 15 Jun 2014 12:15:23 PMAll use subject to JSTOR Terms and Conditions</p><p>http://www.jstor.org/action/showPublisher?publisherCode=injhttp://www.jstor.org/stable/25522845?origin=JSTOR-pdfhttp://www.jstor.org/page/info/about/policies/terms.jsphttp://www.jstor.org/page/info/about/policies/terms.jsp</p></li><li><p>28 The Irish Naturalist. February, </p><p>"of black slate in the south-westerni part of the present sheet were "separated out and distinguished as Coal-mneasures,' but, as will be "shown in the context, there is now strong reason to doubt whether "these beds should be regarded as Coal-measures." </p><p>In the chapter on the superficial deposits an interesting account is given of the discovery of "an ancient shore line of eEalier date than the glaciation of the district." </p><p>Part IL is occupied with a detailed description of the superficial de posits, and comprises 59 pages of closely printed matter of very great value. </p><p>Part III. gives in I8 pages an account of the "E Fconomic Geology' of </p><p>the area under the heads of Building Stone, Slates, Bricks, Silica Clay, Sand and Gravel, Road Materials, Water Supply, and Agricultural Geology. The latter includes useful notes on soils and subsoils, with a table showing their localities, nature, depths, and the petrological character of their contents. </p><p>There is a good index and an appendix containing a list of papers on the geology of the Cork district. The memoir is illustrated by several instructive figures in the text, and by six beautiful photographic plates by R. Welch. </p><p>T. F. </p><p>ALIENS, DESIRABLE AND UNDES1BABLE. </p><p>Alien Flora of B3ritaln. By STYapmN TROnYX DUNN, B.A., P.LS. </p><p>Pp. I6 + 208. London: West, Newman, and Co. io5. 'Price, 5s. </p><p>Before leaving England for Hong Kong in I903, Mr. Dunn issued'a </p><p>"Prelinminary List of the Alien Flora of Britain " This was a list only. Now, owing chiefly (so he tells us) to the industry of his wife, he has </p><p>been enabled to publish an interesting little book on the same subject, in which each of nearly a thousand species has appended to its name a </p><p>note varying in length from a few lines to half a page. These notes give the original home of each plant, and state or suggest its mode of origin in these islands, but they are a little disappointing in usually not </p><p>giving any indication of the British localities. "Trigonetla araica, Delile.-An Oriental weed, once recorded in England among grain aliens," does not, after all, convey much more information than was </p><p>given by the inclusion of the bare name in the "Preliminary List." But this does not much detract from the value of the book as a record </p><p>of- alien immigration and casual introduction. </p><p>Quite the most interesting feature of Mr. Dunn's book is the intro </p><p>duction, in which the questions of true nativity, of degrees of naturaliza </p><p>tion, of sources of introduction, and of the evidence to be emnployed in </p><p>fixing the standard of plants, are excellently dealt with. We would </p><p>like to see this essay read and taken to heart by every field botanist. </p><p>IL L4.. Pt </p><p>This content downloaded from 185.2.32.28 on Sun, 15 Jun 2014 12:15:23 PMAll use subject to JSTOR Terms and Conditions</p><p>http://www.jstor.org/page/info/about/policies/terms.jsp</p><p>Article Contentsp. 28</p><p>Issue Table of ContentsThe Irish Naturalist, Vol. 15, No. 2 (Feb., 1906), pp. 21-61Edward Williams. Born 8th May, 1848. Died 15th December, 1905 [pp. 21-26]ReviewsReview: The Distribution of Scale-Mosses [pp. 26-27]Review: Drift Survey Work in the South [pp. 27-28]Review: Aliens, Desirable and Undesirable [p. 28-28]</p><p>A Visit to Mitchelstown Cave [pp. 29-36]Irish Societies [pp. 36-41]NotesThe Use of the Word "British" [p. 41-41]The Numbering of the County Divisions of Ireland [p. 42-42]Asplenium Ruta-Muraria on Achill Island [pp. 42-43]Kilkenny Roses [p. 43-43]Euphrasia Foulaensis in Ireland [p. 43-43]Entomological Notes from Londonderry [pp. 44-45]Dotterel in Donegal Bay [p. 45-45]Fork-Tailed Petrel in Co. Fermanagh [p. 45-45]Gulls and Gravity [p. 46-46]Polecat Remains in a Clare Kitchen-Midden [p. 46-46]The Origin of Galway Bay [p. 46-46]</p><p>Additions to "Irish Topographical Botany" in 1905 [pp. 47-61]</p></li></ul>

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