=Pasteur, Louis.= B. at Dole (Jura), 1822. Studied at Besançon; M.D., 1847; Prof. Physics, Lyceum, Dijon, 1848; Prof. Strasburg, 1852; Dean Fac. Sciences, Lille, 1854; Scien. Dir. Norm. Sch., Paris, 1857-1867; Prof. Geol. Physics and Chem. École des Beaux Arts, 1863; Prof. Chem. Sorbonne, 1867; Mem. Acad. Sci., 1862; Direct. Lab. of Chem. Research, Fac. Sci., Paris; Med. (2) Roy. Soc. of Gt. Brit.; received Prize of 10,000 fls. from Austria, and another of 12,000 frs., and a State annuity for his works on silk-worms, beer, wines and vinegar. Author of “Nouvel exemple de fermentation déterminé par des animalcules infusoires, pouvant vivre sans oxygène libre,” 1863; “Études sur le vin, ses maladies, causes qui les provoquent, etc.,” 1866; “Études sur le vinaigre, ses maladies, moyens de les prévenir, etc.,” 1868; “Études sur la maladie des vers à soie,” 1870; “Études sur la bière,” 1878; “Les Microbes,” 1878, jointly with M. Tyndall, etc. Contrib. paper on “The attenuation of the virus of rabies,” Académie des Sciences, May 19, 1884. “M. Vulpian injected under the skin of rabbits saliva collected at the very moment of the experiment, from perfectly healthy individuals, and this injection killed the rabbit so inoculated in forty-eight hours. The blood of these rabbits was found to be filled with microscopic organisms; among which was a special organism discovered by M. Pasteur in the course of his experiments with inoculation of the saliva of a child who had died of rabies. One drop of this blood, diluted in ten grammes of distilled water, and injected under the skin of other rabbits, also brought on the death of these animals; the blood of which was similarly filled with microscopic organisms. These singular results, of which the interpretation is by no means easy, present also the no less singular peculiarity of not being stable. Rabbits placed in identical conditions, and inoculated with the same saliva, experienced no ill effects from their inoculation, and continued in excellent health. It would therefore appear that experimental microbiology is not yet on the way to become either an easy or clear science, notwithstanding M. Pasteur’s _fiat lux_.”--_Brit. Med. Journ._, April 9, 1881, p. 571. “The question of spontaneous generation I will not attempt to treat here as it would require special discussion. The experiments of M. Pasteur have only shown that under the experimental conditions with which he surrounded himself, conditions which were far from natural, he did not detect any spontaneous organisation of matter. Moreover, all those who have devoted themselves to science, with the sole aim of seeking the truth, as G. Bernard, Huxley, Häckel, etc., while admitting that M. Pasteur’s experiments had been properly conducted within the very narrow circle they occupied, have unanimously rejected the assertions and generalisations drawn from them by that savant himself.”--Dr. Jousset de Bellesme, _Progrès Médical_, Vol. X., 1882, p. 340.