Claude, Georges (1872-1960).

Two short papers. Author's holograph MSS. (1) Sur les accidents singuliers dans les appareils bas?s sur la liqu?faction de l'air, et sur les moyens de les ?viter. Note de M. Georges Claude pr?sent?e par M. d'Arsonval [Paris] [c. 1930] (5 ll. + 2 ll.). A fair copy of an earlier draft, apparently by the hand of Dr. Jean Ars?ne d'Arsonval [1851-1940], professor of physiology at the Coll?ge de France. (2) Communication verbale faite ? l'Acad?mie des Sciences 3/12/1935 sur l'Exp?dition de la 'Tunisie' (12 ff.). Written on the rectos only. An account of an unsuccessful expedition in the vessel 'Tunsie' to experiment with a 'Tube immersoire' for the exploration of the sea at great depths for scientific purposes, temperatures, movements of currents, etc. It was carried out off the coast of Brazil, but failed owing to the inadequacy of the apparatus for lowering and operating the device. Produced in Paris.