PARIS Academy of Sciences, September 4 (CM., 197, 565-588). A. LACROIX: The fall of a meteorite in Cam-bogi^lon January 9, 1933. Details of the results of a microscopic and metallographic study of the meteorite. GEORGES CLAUDE: The realisation in the near future of a Claude-Boucherot installation on a vessel. ARNATJD DEN JOY: Plane cyclic continue. L. TCHAKALOFF: A problem of the minimum concerning a certain class of polynomials. A. RATIB: A property of the eddy in the permanent plane movement of an incompressible viscous fluid. WENCESLAS JARDETZKY: The small oscillations of a fluid mass isolated in space. BENJAMIN JEKHOWSKY: The probable number of asteroids that can be discovered with the existing means of observation. L. MEDARD: The Hainan effect of sulphuric acid. H. WTJNSCHEN-DORFF and MME. P. VALIER: The reaction of potassium chromate on manganese chloride in saturated solutions. The products of the reaction are manganese bichromate, MnCr2O7, and chromium manganite, Cr2(MnO3)3. GEORGES BLANC and L. A. MARTIN: The sensibility of the rabbit and of man to the virus of stomatitis of sheep.