72 CHEMISTRY 



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

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

 "Lemons sur les methodes generates desynthese 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 Ecole Siiperieure 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 



