160 TRANSACTIONS OF THE ACADEMY 



4th Class. — Zoology, embracing the comparative anatomy 

 and physiology of animals. This class is further divided into 

 six sections, viz: 



1. History and classification of mammaha. 



2. " " birds. 



3. " " reptiles. 



4. " " fishes. 



5. " " insects, including Crustacea. 



6. " " moUusca, including con- 

 chology and the zoophylic productions. 



5th Class. — Botany, including vegetable physiology. 



The first named member of each class, is chairman of that 

 class, and at present the chairmen are, 1st class, B. H. Latrobe ; 

 2d class, J. T. Ducatel, M. D. 3d class, P. T. Tyson ; 4th 

 class, E. Geddings, M. D. 5th class, W. E. A. Aikin, M. D. 



A paper was received from T. Phillips Allen, corresponding 

 member, residing in North Carolina, 'on the chemical compo- 

 sition of the Prussian blue of commerce,' which was read and 

 referred to the section of chemistry. 



The following donations were received and referred to the 

 different sections, viz. From Prof. Ducatel, a circular steel 

 plate, marked with various colours, by the agency of galvanism, 

 by M. Nobili of Florence, referred to section 1st. — From Dr. 

 J. R. W. Dunbar and Dr. Edward A. Worrell, a cougar {Felis 

 concolor,) prepared by them; referred to section 4th. — From 

 Dr. P. Macaulay, a fossil vegetable from the Virginia coal 

 mines ; referred to section 3d. 



February ^th. — Donations were received and referred as 

 follows: From Messrs. Alexander and Ducatel, a copy of 

 their report on the new geographical and geological map of the 

 state, for 1S35 ; deposited in the library. From Dr. Macaulay, 

 a series of minerals and fossils from the coal formation of 

 Virginia, which having been examined and labelled, were 

 referred to the curators to be placed in the cabinet. From Dr. 

 Dunbar, two vols, of the Transactions of the American Phi- 

 losophical society, deposited in the library. From Mr. Geo. 

 W^. Andrews, a copy of 'the Manual of the Practical Natura- 

 list;' deposited in the library. From Dr. Geddings and Dr. 

 Dunbar, a cougar ; referred to section 4th. 



A report on Mr. Allen's paper, read at last meeting, was 



