152 Royal Society, 



devotion to his favourite studies, his great knowledge of details, 

 combined with no inconsiderable talents for classification, were 

 eminently calculated to raise him to the very highest eminence as an 

 original and philosophical naturalist. Though his career of research 

 and discovery was prematurely cut short, yet we are chiefly indebted 

 to him for the fii-st introduction into this country of the natural 

 system of arrangement in conchology and entomology, and for the 

 adoption of those more general and philosophical views of those 

 sciences which originated with LatreilU) and Cuvier. Dr. Leach was 

 the author of a paper in our Transactions on the genus Ocythoe, 

 to prove that it is a parasitical inhabitant of the Argonaut. He wrote 

 several memoirs in the Linnaean Transactions ; an excellent treatise 

 on British Malacostraca : and he also contributed largely to the 

 Zoological Miscellany, to Brewster's Encyclopaedia and to the French 

 Dictionnaire des Sciences Naturelles, He died of an attack of 

 cholera on the 25th of August last, at the Palazzo St. Sebastiano, in 

 the province of Tortona in Italy. 



The last name which occurs in the melancholy list of our departed 

 compatriot associates, is that of Dr. William Henry, to whom the 

 science of chemistry generally, and of gaseous chemistry in parti- 

 cular, is under great obligations. He was the author of nine papers 

 in our Transactions, many of them of great merit* ; and his System of 

 Chemistry is one of the best written and beet arranged compen- 

 diums of that important and extensive science, which has been pub- 

 lished of late years, whether in our own language or in any other. 

 The Memoirs of the Manchester Society are chiefly indebted to 

 him, in conjunction with Dr. Dalton, for the high character which 

 they have so long maintained. Dr. Henry, like Dr. Wollaston, made 

 the results of science, obtained by the most original and diffi- 

 cult researches, the foundation of a splendid fortune, and few persons 

 have contributed more effectually, by their discoveries and exertions 

 to the promotion of those arts and manufactures which form the 

 foundation of the prosperity of a great commercial nation. 



The names of the Foreign members whom the Society has lost 

 during the last year are, Andre Marie Ampere and Antoine- 

 Laurent de Jussieu, both of them members of the Academic des 

 Sciences de France. 



Mons. Ampere was born at Lyons in 1775, and made his first 

 appearance in the scientific world in a short work which showed con- 



[* Of tiiese nine papers by Dr. Henry in the Philosophical Tr<an suctions, 

 seven have been given entire in the Philosophical Magazine, together with 

 an abstract of another. Dr. H.'s Account of Experiments to decovipose 

 Muriatic Acid, will be found in Phil. Mag., First Series, vol. vii. p. 211 ; an 

 abstract of his paper on the Absoi-ption of Gases by Water, (from the pen, 

 we believe, of Sir H. Davy,) in vol. xvi. p. 89 ; his Description of an Appa- 

 ratus for analysing Inflammahle Gases, with Experiments on the Gas from 

 Coal, in vol. xxxii. p. 277 ; Experiments on Ammonia, in vol. xxxiv. p. 3G9 ; 

 Analysis of British and Foreign Salt, in vol. xxxvi. p. lOG ; Additional Ex- 

 periments on Muriatic Acid, in vol. xl. p. 337 ; On the aeriform compounds 

 of Charcoal and Hydrogen, in vol. Iviii. p. 90 ; and On the action of finely 

 divided Platinum on Gaseous Mixtures, in vol.lxv. p.2G9. — Edit.] 



