228 Royal Academy of Sciences of Paris. 



at the recommendation of the Section of Astronomy, the one 

 to M. Rumker, and the other to M. Gambart, jun. 



May 19. — A Memoir by M. Hill was received relative to 

 certain new Means of Producing Sound ; also one by M. Mar- 

 cel de Serres, entitled Observations on the Human Bones dis- 

 covered in the Fissures of Secondary Strata, and in particular 

 on those which are found in the cavern of Durfort in the De- 

 partement du Gard. — M. Poinsot read a Memoir on the Ana- 

 lysis of Angular Sections ; and M. Gay-Lussac read his Re- 

 flections on Volcanos*. 



May 26, — M. Canchy read a Memoir on the Determination 

 of Definite Integrals; andMM. Prevost and Dumas read their 

 Memoir on the Decomposition of Urinary Calculi in the 

 Bladder by means of the Voltaic Pile. 



M. Prony made a very full Report, in the name of a Com- 

 mission, on the work of MM. Clapeyron and Lame relative 

 to the Stability of Arches. It appears that these young en- 

 gineers had been anticipated in the discovery of the fundamen- 

 tal bases of the theory, by M. Audoy, chef de bataillon of en- 

 gineers. Their work is not the less worthy of praise : the geo- 

 metrical construction which they give of the point of rupture 

 is curious; and the analysis is conducted with skill and elegance. 



June 2. — At this sitting were read M. Fourier's Eloge on 

 Delambre ; a Memoir by M. Magendie on some recent Dis- 

 coveries relative to the Functions of the Nervous System ; M. 

 Cuvier's Eloge onM. Haliy; and Considerations on the Com- 

 mercial Strength and Public Works of France and England, 

 by M. Dupin. 



June 9. — A paper on Mathematical Analysis, by Mr. Walsh, 

 was received. — M. Cuvier read a Memoir, " Sur tine Pha- 

 lange ongiieale fossile" which may be presumed to have be- 

 longed to an unknown toothless animal, probably a gigantic 

 species of pangolin. — M. CErsted was elected to fill the va- 

 cancy among the Corresponding Members ; the other candi- 

 dates being MM. Chladni, Seebeck, Brewster, Amici, and 

 Gilbert of Leipsic. 



M. A. St. Hilaire read a first Memoir on the Ginobasis. 



June 16. — A Memoir was received from M. Lambert on 

 Symmetric Polyhedrons. 



M. Becquei'el read a Memoir on the Development of Elec- 

 tricity by the contact of two portions of the same metal of a 

 sufficiently unequal temperature. Also, M. Cuvier read a 

 Memoir entitled Observations on a singular Alteration of some 

 Human Sculls. 



* See page 81 of our present volume. 



M.[Ampere 



