Author of “Om Hvirvelsöjlen hos nyfödte og dens Forhold til chorda dorsalis” (The spinal chord at birth and its relation to the chorda dorsalis) Norsk Magas. for Lägevidens-Kab., Vol. VIII. (1879), p. 292. Made experiments on the cornea of rabbits, rats, cats, fowls, toads, &c.--_Vide_ _Appen. Rep. Roy. Com._ =Heidenhain, Rudolph Peter Heinrich.= B. at Marienwerder, West Prussia, 1834. Prof. of Physiol, and Microscopic Anat. Med. Fac. Breslau; Lect. Physiol. Institute. Author of “Physiologische Studien,” Berlin, 1856; “Die Vivisection im Dienste der Heilkunde,” Leipsig, 1879; “Beiträge zur Kenntniss des Pancreas,” Pflüger’s _Archiv._, Vol. X., p. 557; “Ueber die Absonderung der Fundusdrüsen des Magens,” Pflüger’s _Archiv._, Vol. XIX., p. 148. “The following observations, in so far as they relate to temporary fistula, were made in the summer of 1872; … those relating to permanent fistula belong principally to a series of experiments made with the students, Messrs. Jastrow, Langondorff and Körner. The principal results of both series proved that the secretion of the pancreas if arrested may be made to _continue_; or if present may be rendered more active. However, I must at once observe that the disturbances, the causes of which are still unknown to us, which almost invariably render useless all experiments on the pancreas, were also often present in those I am about to describe.… “The experiments were invariably made on curarised animals. In such cases we have noticed the striking fact when the rapidity of secretion had been measured before and after curarisation, there was always a diminution during the curare anæsthesia, in contradiction to the result of Bernstein’s experiments; in which the secretion increased under the influence of the poison.” “_Beiträge zur Kenntniss der Pancreas._”--Pflüger’s _Archiv._, Vol. X., pp. 606-607. Permanent fistula of the stomach established in dogs, then they were curarised and the spinal marrow stimulated with electrodes to cause secretion from the pancreas. These experiments were undertaken with the aid of students. =Heinsius von A.=, M.D., Prof. Physiol., Leyden University. Author of “Ueber die Eiweisskörper des Blutes,” Pflüger’s _Archiv._, Vol. II., p. 1; “Ueber Serumalbumin und Eieralbumin und ihre Verbindungen,” Pflüger, Vol. XII., p. 549. =Helmholtz-Hermann, Ludwig Ferdinand von.= B. Potsdam, 1821; studied med. La Charité, Berlin; Military Surgeon, Potsdam; Prof. Anat. Acad., 1848; Prof. Physiol., Königsberg, 1849; Prof. Physiol., Bonn, 1855; Heidelberg, 1858; Prof. of Experimental Physics, Med. Fac., Berlin Univ., 1871; Corr. French Acad. of Sciences, 1870; Privy Councillor. Author of “Ueber die Erhaltung der Kraft,” Berlin, 1847; “Handbuch der Phys. Optik.,” Leipsig, 1856-1866; “Lehre von den Tonempfindungen,” Brunswick, 1862, etc.