FOR THE ADVANCEMENT OF SCIENCE. 139 



The Rev. Mr. Hope read a communication from Mr. Raddon, "On 

 the Means of obtaining Insects from Turpentine/' and exhibited two 

 cases, containing a vast number of very fine specimens. Mr. Hope 

 observed, that in future it would not be necessary to proceed to 

 America to procure insects, as it was only to go to the warehouses of 

 those merchants who imported turpentine, and by searching through 

 it when boiling, they might very shortly obtain sufficient specimens 

 to form fine collections at a few shillings' expense. 



Thursday. — Dr. Richardson read the concluding part of his 

 report on North American Zoology which treated principally of 

 birds and fishes. He also incidentally referred to a small fish which 

 drummed at the bottom of vessels on the North American Coasts, 

 and so loudly as to shake the vessel, and to render it utterly impos- 

 sible for persons unaccustomed to it to sleep. 



Mr. Mackay then read a communication he had received from 

 Mr. Nuttall, " On the Management of the Pine Tribe." Where 

 the plants grew too rapidly, or out of proportion to their rooting, he 

 found that this defect was corrected by breaking off the fully-deve- 

 loped buds in the spring, except from the short branches. Larches 

 he had cut down to a strong lateral branch, which ultimately be- 

 came a choice tree. He remarked, that he had observed that resi- 

 nous trees escaped the effects of lightning, whilst others were struck. 



Mr. Carpenter read an elaborate communication on Criteria of 

 Species founded on the views of Dr. Prichard. This called forth a 

 discussion, in which Mr. Vigors, Mr. Carpenter, the President, and 

 Dr. Prichard took part. 



Several other papers were also read during the meeting, but our 

 limits do not allow us to particularize. A vote of thanks having 

 been passed to the chairman the section separated. 



Section E. — Medical Science. 



President — Dr. Roget. 



Vice-Presidents — Dr. Bright, Dr. Macartney. 



Secretary — Dr. Symonds. 



Committee — Dr. Bernard, Dr. James Bernard, S. D. Broughton, Esq., 

 Bracey Clarke, Esq., H. Daniel, Esq., George D. Fripp, Esq., Dr. 

 Marshall Hall, W. Hetling, Esq., Dr. Hodgkin, Dr. Houston, Dr. 

 Howell, Dr. James Johnson, R. Keate, Esq., O. King, Esq., Dr. Pri- 

 chard, Dr. Riley, Dr. O'Beirne, Dr. Carson, R. Smith, J. Swayne, 

 R. Carmichael, E. Cock, J. Cusack, J. Estlin, O. Rees, N. Vyse, Esqre. 



As the reports read before this section, although no doubt highly 

 important to the profession, are not calculated to excite so much ge- 

 neral interest, we must content ourselves with a brief enumeration 

 of the papers read at the respective meetings. 



Monday. — Dr. O'Beirne read a Report of the Dublin Committee 

 on the Pathology of the Nervous System : also, an abstract of a 

 work on Tetanus. A paper from Sir D. Dickson on Aneurism was 

 likewise read. 



Tuesday. — Dr. Symmonds read, an elaborate and interesting pa- 

 per on the treatment of some Diseases of the Brain. 



