^^ports of ^mdm. 



Bradford Naturalists' Society. — Annual Meeting, Dec. 19th, Mr. 

 E. Margerison, president, in the chair. The business of the meeting was 

 to elect officers for the ensuing year. The report of the past year was 

 read, which showed an increase of ten members. 



Meeting January 9th, Mr. Firth, president, in the chair. — After the 

 usual business of the meeting had been disposed of, the president made a 

 few remarks, urging all members to commence the coming season by 

 taking notes of the arrival of migratory birds, flowering of plants, &c — 

 H. T. SoppiT, Cor. Sec. 



GooLE Scientific Society. — At the last meeting a paper was read by 

 Major Best on " Crookes' Radiometer and its Teachings," Mr. E. 

 Hunter, the president of the Society, in the chair. The paper was 

 illustrated by experiments of a very interesting character. The actions 

 of all the descriptions of radiometers agree in this, that they show 

 differing degrees of action under the several rays of the spectrum, but 

 that none are without effect. 



HuDDERSFiELD SCIENTIFIC Club. — Meeting Jan. 12th, the president, 

 Mr. C. P. Hobkirk, in the chair. The exhibitions included the following 

 mosses by the president : — Eurynchium striatum, Dicranum palustre, 

 Hypnum Schreheri, Leucohryum glaucum, and Polytrichum piliferum — all 

 collected by Mr. George Brook at Sherwood Forest, in April last. The 

 president also shewed Wahlenhergia hederacea from Thurstonland. Mr. 

 John Conacher shewed the following conchological specimens : — Helix 

 ericetorum, H. virgata, H. nemoralis, H. caperata, and S. hispida, from 

 Malton ; Sphmrium corneum and Bithynia tentaculata, from Glasgow ; 

 Limncea auricularia from Edinburgh ; Bithynia Leachii from Askern : 

 Sphoirium rivicola from Elland (now extinct there) ; Planorhis alba from 

 Luddenden Foot ; Valvata piscinalis from Crieff ; and Cochlicopa tridens 

 from Bretton Park. Mr. G. T. Porritt shewed various lepidoptera, 

 including Notodonta chaonia and Eudorea atomalis, the latter from 

 Rannoch ; also preserved larvse of Acidalia inornata, A. incanaria, 

 Eumia cratoegata, Botys acinalis, Spilodes palealis (?), Pionea forjicalis, 

 Arctia lubricipeda and Mamestra brassicm. The secretary, Mr. George 

 Brook, read extracts from a paper by Mr. J. Huddart, in the current 

 number of the Journal of Science," entitled " Evolution by Expansion 

 versus Evolution by Natural Selection," which elicited some discussion, 

 most of the members considering the argument as an " expansion " of 

 the Darwinian theory, rather than antagonistic to it. — G. B. 



Leeds Geological Association. — Meeting January 9th, at the College 

 of Science, Cookridge-street. The president (Professor A. H. Green, 

 M.A., F.G.S.) delivered a lecture on " Recent Views on the formation of 

 Crystalline Rocks." The lecturer said that probably all crystalline rocks 

 are altered non-crystalline or derivative rocks ; and in support of this 



