=Rollet= (Prof.), Gratz University. =Rosenthal, Isidor=, B. 1836, Erlangen. M.D. Berlin Univ.; Prof. Physiol. and Hygiene at Med. Fac. Univ. of Erlangen. Author of “Athembewegungen u. Innervation derselben, thierische Wärme,” in Hermann’s “Handbuch der Physiologie;” “Allgemeine Physiologie der Muskeln u. Nerven,” in “Internationale Wissenschaftliche Bibliothek;” “Bier u. Branntwein u. ihre Bedeutung für die Volksgesundheit,” 1881. =Rossbach, Michael Joseph.= Prof. Med. Fac. Univ. Jena; Director of the Clinic and Policlinic. Author of “Pharmakologische Untersuchungen,” Wurzburg, 1876; “Ueber den Einfluss der Künstlichen Respiration auf Strychnin-vergiftung,” Centralbl. f. d. Med. Wiss., 1873, No. 24; “Neue Studien ueber den Physiologischen Antagonismus der Gifte,” Pflüger, Vol. XXII., p. 1. Experiments on curarised dogs and cats: Nerves dissected out and stimulated, drugs injected. (_See_ Luchsinger.) “At the same time Rossbach also studied the influence of artificial respiration on the cramps induced by strychnine. He totally contradicts the results observed by Leube. Artificial respiration, he finds, does not alter the effects of poison, whether it be given in doses sufficient to produce cramps only or in fatal doses.”--Eckhart’s _Beiträge_, Vol. X. (1883), p. 40. =Roth, Wladimir.= M.D.; ex-Chef de Clin. at Univ. of Moscow. Made experiments with the Venom of Salamanders on frogs.--Rep. in _Gaz. Med. de Paris_, 1877, p. 409. =Roy, Charles Smart=, Cambridge. M.B. Edin. and C.M. 1875 (Univ. Edin.) M.D. Edin. 1878, (Edin.) G. H. Lewes, Scholar; late Brown, Prof. of Pathol. Univ., of London; Prof. of Pathol. Univ. of Cam., 1884; formerly Asstn. to Prof. of Physiol. Univ. of Strasburg. Contrib. to Journ. of Physiol., Du Bois Reymond’s Archiv. and Virchow’s Archiv. _Held a License for Vivisection at Cambridge University New Museum Physiological Laboratory and at Brown Institution, London, in 1880-81-82-83. Certificates for Illustrations of Lectures and for Experiments on Cats, Dogs, Horses, Mules or Asses, in 1882. Special Certificates for Experiments without anæsthetics and Certificate permitting Experiments on Cats, Dogs, Horses, Mules or Asses in 1883. No Experiments returned on Horses, Mules or Asses._