116 MEETING OF THE BRITISH ASSOCIATION. 



Section D. President — Dr. Allman. 



Vice Presidents— Dr. Daubeny ; Prof. Graham. 



Secretaries — Mr. Curtis ; Dr.'lAtton. 

 Section E. President — Dr. Prichard. 



Vice Presidents— jyr. Colles; Surgeon General 

 Crampton. 



Secretaries — Dr. Harrison ; Dr. Hart. 

 Section F. President — Mr. Babbage. 



Vice Presidents — Colojiel Sykes ; llev. E. Stanley. 



Sec7-etaries,— Mr. Greg ; Dr. Longfield. 



The Royal College of Physicians, on Saturday evening, invited 

 most of the members who had arrived, to a conversazione in their 

 library and museum, at St. Patrick Dunn's Hospital, — where dis- 

 cussions on medical subjects are held monthly. Dr. Jonathan Os- 

 borne, who was in the chair, read a preliminary paper, and other 

 papers were afterwards read by Drs. Marsh and Montgomery ; after 

 which, the company adjourned to supper in the state apartments. — 

 We now give as comprehensive an account of the sectional and 

 other proceedings, in regular order, as our limits will admit. 



Monday. — A vast accession of members presented themselves who 

 had arrived in Sir John Tobin's vessel, and in the Liverpool and 

 Holyhead packets. By the judicious arrangements of Professors 

 Lloyd and Phillips, the whole of the sections were in working order 

 at eleven o'clock ; but it soon became evident that the sectional 

 meetings would be crowded beyond example The Physical, Geo- 

 logical, and Medical rooms especially, were completely filled a few 

 minutes after the chair was taken. The sections were opened in 

 the following places : — 



A. Mathematics and Physics — The Philosophy School, Trinity 

 College. 



B. Chemistry and Mineralogy — Chemical School, ditto. 



C. Geology and Geography — Theatre of the Royal Dublin So- 

 ciety. 



D. Zoology and Botany — Board-room, ditto. 



E. Anatomy and Medicine — Council- room. Royal Irish Academy. 



F. Statistics — Divinity School, Trinity College. 



Section A. — Mathematics and Physics. — Dr. Robinson in the 

 chair. — Mr. Whewell read an able paper on electricity and magnet- 

 ism, on some points of which, however, he was opposed in opinion 

 by Mr. Harris ; Professor Powell made an interesting communica- 

 tion on the nature of radiant heat ; Dr. Hudson read a paper on the 

 radiation of heat and cold ; Sir John Ross on the Aurora Borealis ; 

 Mr. Roberts on optical phenomena ; Mr. Robert Mallet on a new 

 machine, worked by steam, for separating iron filings from brass 

 and copper filings ; and Mr. Russell on floating bodies. 



Section B. — Chemistry and Mineralogy. — ^Dr. Thompson in the 

 chair. — Professor Davy read an important paper on the protection 

 of metals attached to buoys, and illustrated his statements by a va- 



