:2i28 Scientijit Notices — Chemistry. [MarcIs, 



A Description of such Genera and Species Of Insects, alluded 

 to in the Introduction to Entomology of Messrs. Kirby and 

 Spence, as appear not to have been before sufficiently noticed 

 or described ; by the same author : communicated by the Zoo- 

 logical Club. f. 



Jan. 18, 1825. — The reading of the Rev. Messrs. R. Shep- 

 pard's and \V. Whitear's Catalogue of the Birds of Norfolk and 

 Suti'olk, commenced and continued during the last Session, was 

 resumed. 



Pgl^ 1. — On the Structure of the Tarsus in the Tetramerous 

 and Trimerous Coleoptera of the French Entomologists ; by 

 W. S. Mac Leay, Esq. MA. FLS. 



Feb. 15.-— The reading of the Rev. Messrs. Sheppard's and 

 Whitear's Catalogue of Norfolk and Suffolk Birds, and that of 

 Dr. Hamilton's Commentary on the third part of the Hortusj 

 Malabaricus, were continued. 



ASTRONOMICAI. SOCIETY. 



The fifth Annual General Meeting of this Society was held on 

 the 11th of February, for the purpose of receiving the report of 

 the Council upon the state of the Society's atfairs, electing 

 Officers for the ensuing year, &c. Every lover of astronomy 

 must be gratified to learn that the prosperity of the Society con- 

 tinues to increase ; bu!. the late period of the month at which we 

 received the account of the proceedings precludes its insertion 

 in the present number. 



Article X. 



SCIENTIFIC NOTICES. 



Chemistry. 



1. On the Ingots of Copper obtained via humidd. 



By M.Clement. 



The beautiful experiments of Sir James Hall have demon- 

 strated that pulverised carbonate of hme, a substance eminently 

 decomposable by heat, may be fused, under great pressure, 

 without losing its carbonic acid, and afford when cold a solid 

 mass similar to marble. 



Inhke manner as it was heretofore imagined that that mineral 

 was necessarily formed by deposition from its aqueous solution, 

 and could by no means be a product of heat, so at present it is 

 generally believed that a soHd mass of metallic copper capable of 

 extension under the hammer, must have undergone igneous 

 fusion, and have acquired its cohesion by cooling. Copper 

 precipitated from its solution by whatever agent, is always in the 

 state of a fine loose powder. The following Fact, however, will 

 ahwv that an ingot of copper may be formed via humidd. I am 



