72 CHEMISTRY 



of benzene, (with Berthelot) author of "Traite de Chimie 

 organique" (4th ed., 3 vol., Paris, 1907-1908), and 

 "Lemons sur les me thodes generates desyn these en chimie 

 organique" (Paris, 1864). 



III. At the Museum d'Histoire Naturelle: MAQUENNE, 

 whose researches extend over the field of the carbo- 

 hydrates, author of "Les Sucres et leurs principaux 

 derives" (Paris, 1900); and ARNAUD. 



IV. At the ficole Superieure de Pharmacie: BEHAL, 

 an organic chemist who, among other subjects, has 

 studied unsaturated compounds and creosote, author of 

 "Traite de Chimie organique" (2 vols., Paris, 1909-1911, 

 3d ed.); GAUTIER, known for various investigations in 

 organic chemistry, in chemical toxicology, and in 

 hygiene, author of "Cours de Chimie organique" (Paris, 

 1906, 3d ed.), "Ptomaines et leucomaines" (Paris, 1866), 

 and "L 'Alimentation et les regimes chez rhomme sain 

 et chez les malades" (Paris, 1904); D. BERTHELOT, 

 author of important researches on the theory of gases, 

 the determination of molecular weights, and photo- 

 chemistry; MOUREU, a student of the rare gases of the 

 atmosphere, and an eminent organic chemist, author of 

 "Notions fondamentales de Chimie organique" (Paris, 

 1902); BOURQUELOT, whose researches upon enzymes are 

 well-known, author of "Les Ferments solubles" (Paris, 

 1896); VILLIERS; GUIMBERT; and LEBEAU. 



V. At the Ecole Municipale de Chimie, HANRIOT 

 and COPAUX; at the Faculty of Medicine, DESGREZ; 

 at the Ecole Libre des Hautes Etudes Scientifiques, 

 HAMONET. 



There are also at Paris, chiefly at the Institut Pas- 

 teur, a number of others, including BERTRAND, Roux, 

 MESNIL, DELEZENNE, CHAMBERLAND, MARTIN, MAZE, 

 MOUTON, J. DUCLAUX, whose investigations fall in the 

 borderland of chemistry, physiology, pathology, and 



