1S47.] Linnean Society. 341 



Conchyliologiques, ou Descriptions et Figures de tontes les Coquilles 

 connues vivantes et fossiles,' edited by M. Chenu, the Conservator of 

 the Collection, of which upwards of sixty numbers, containing more 

 than 300 plates, are already published. 



M. Delessert died at Pai'is on the 1st of March in the present 

 year. He had long been a Member of the Academy of Sciences of 

 the Institute of France, and had received various honorary distinc- 

 tions from his Government. His election as a Foreign Member of 

 the Linnean Society dates from 1835. It should not be omitted that 

 he has provided in his will for the maintenance of his museum and 

 his library, and for rendering them useful to science by their con- 

 tinued accessibility. 



Of the events of the life of Henri Dutrochet, M.D., I have been 

 able to procure but little information. He commenced his career in 

 1806, by the publication of an inaugural dissertation entitled ' Essai 

 d'une Nouvelle Theorie de la Voix ;' and subsequently distinguished 

 himself as an able physiologist, chiefly by the application of the 

 principles of physics to the explanation of various phsenomena of or- 

 ganization. In 1837 he collected together the most important of his 

 numerous contributions to Anatomy and Physiology in two 8vo vo- 

 lumes, under the title of ' Memoires pour servir a I'Histoire Anato- 

 mique et Physiologique des Vegetaux et des Animaux.' Many of 

 the memoirs contained in these volumes are entirely rewritten, and 

 as he declares in his preface that he considers all that he had pre- 

 viously written on the subjects treated of and not reproduced in them 

 as non-existent, they must be regarded as containing the latest and 

 most matured ex23ression of his views. His memoirs relate to a 

 great variety of subjects, but those which have exercised the most 

 important influence on science, and on which his fame will princi- 

 pally rest, are devoted to the exposition of the phsenomenon to which 

 he has given the name of endosmose. By means of this simple phy- 

 sical law which regulates and controls the motions of fluids of differ- 

 ent degrees of density separated from each other by permeable mem- 

 branes he has himself explained, and furnished to others a most im- 

 portant element in the explanation of, many obscure and previously 

 unintelligible processes in the economy both of animals and jilants. 



He was a Member of the Academy of Sciences of the Institute of 

 France, and became a Foreign Member of the Linnean Society in 

 1839. He died on the 4th of February in the present year. 



Among our Associates we have to record the death of 

 Charles Sutton, D.D., who was born at Norwich on the 6th of 

 No. XXXIV. — Proceedings of the Linnean Society. 



