DIBOUSSION-STOBM OF SEPTEMBEB 1ET TO 8BD, 1888. 26

and i t WRB believed that telegramsfrom New York to London, fving the positions on the Atlantic ot the various storms which had been met wit by steamers arri- ving from Enrope, together with the known disposition of ressure over Western

forecasts. But what was chiefly needed waa some great mind to tell how these storms were originated, and whal caused their advance along IL given track? Also, what caused subsidiaries to form and to travel round the main disturbances ? Mr. BUDD remarked, that he waa on Dartmoor when this storm reached these

islands, and on the night preceding its arrival he witnessed a most wonderful sunset, clearly indicative of storm conditions in the atmosphere, within an ap- preciable distance of the poinb of observation.

Mr. C. HABDING in reply said that the subsidiary depressiou formed in the rear of the rimary disturbance, first shown on the Chart for September 2nd in 45" N and .7&. W, and which seemed to have preserved its relative position with regard to the primary nntil it passed over the British Islands on September 5th, might have hqd some influence in checking the rate of ro eae of the primary. Observations had been utilised from between 200 and 36b sf&s, and the quality of the material waa excellent. He WRB in the South of England when the storm wan ragin , and had noticed that while before the gale the foliage waa beautiful, after it ha$ subsided the trees presented a singed appearance.

Europe since those storms were met with, would be use R 1 data for improving

ON TBB. ~ F L U E N C E OF THE MOON ON TBE HEI~HT OY THE BAROMETEB WITHIN By ROBEBT LAWSON, Inspector General of Hospibh. TBB. TBOPIOS.

(Abstract.)

[Read November 21st, 1883.1

THE author, having referred to the conclusions arrived at by Sir Edward Ssbine, from discussions of the St. Helens obsemations, and by Captain Elliobt from the Singapore observations, that the altitude of the moon affected slightly the barometric readings, proceeds to discuss observations made at Ascension, September lst, 1863, to August Both, 1866 ; St. Helena, Janu- ary 6th, 1848, to December 2Brd, 1846; and Sierra Leone, January let, 1849, to December Both, 1860, with the view of tracing the effect of changes in the moon's declination upon the barometric height.

He shows that, a t Becension, when the moon's declination WILB passing from about its northernmost point to ita southernmost, the mean height of the barometer was -016 in. higher than when it moved in the opposite dirwtion, and the change from the higher to the lower position and vice uarsci was abrupt. At St. Helena the difference was less, being .007 in., whilst at Sierra Leone it amounted to -0126 in. In all these cases the curves repre- senting the results exhibit 8eaonda.y maxims and minima.

The author also inquires into the influence of the moon at new and f d ; and a h at perigee and apogee, upon barometric readings. In the first case he contrasts the mean height for eight days about the time of new moon that of eight days about full moon ; *.the results obtained show small flnctna- tions not exceeding .016in., and the c k e s from the three stations but slightly resemble each other in character.

With regard to the third and final research the author states that the materials a t his disposd were insufficient for the purpose, and that a series of observations extending oqer eighteen years would be required for a proper golation of the question of lunsr influence,