Page:Popular Science Monthly Volume 30.djvu/596

576, and the canals, also owned by the Government, have had something very like what we call a "railroad-war" with one another. The "mixed system" has been abandoned—in Belgium and Prussia, by state management having been made almost universal; and in Italy by its having been practically given up.

of Besançon, France, has effected the direct electro-chemical deposition of palladium on iron, steel, and other metals. The deposition is made directly and of any required thickness, and constitutes the last process in finishing the manufactured article.

a paper read before the British Association, Lord Rayleigh described the method of experiments which he had made for measuring the intensity of reflection from glass and other surfaces, and the results. With a piece of optically-worked blackened glass the amount reflected was .058 of the incident light. The amount of reflection depended greatly on the clearness and polish of the surface. In one case repolishing increased the amount from .04095 to .0445. Fresnel's formula gave in this case .04514. Generally it appeared that the amount reflected was less than according to Fresnel's formula—a result contrary to Rood's. The numbers for polished glass, and for silver on glass, were .94 and .83.

Uralian Society of Lovers of the Natural Sciences will open a Scientific and Industrial Exhibition of Siberia and the Ural Mountains, at Ekaterinburg, on the 27th of May, to continue till the 27th of September, 1887. The mining and metallurgical enterprises, for which the Ural is famous, will be fully represented; in the ethnographic department, the interesting aboriginal tribes of Siberia will be illustrated by groups of living families, with their habitations, furniture, implements, and costumes; and the archæological collections will be to a large extent composed of objects which have never before figured at an exhibition of the kind. Reduced fares from Nijni-Novgorod will be provided for by the committee, of which Mr. A. Mislawsky is chairman.

, a distinguished optician of Paris, died in October. He is best known for having assisted M. Léon Foucault in all his constructions, and especially in the organization of his automatic electric lamp.

, for twenty-one years Professor of Botany at the Academy "of Neufchâtel, Switzerland, has recently died. He studied medicine in his early days, and became a skillful surgeon; then he studied botany under Dr. Oswald Heer; was appointed to his professorship In 1862; was the founder of the Swiss Botanical Society; and was regarded as a high authority on sponges.

, General Inspector of Mines in France, who has recently died suddenly in Paris, was the author of several works on geology, and a professor in the School of Mines.

death has been reported of Elle Wartmann, Professor of Physics in the Academy at Geneva. He was the author of numerous important researches and books, among which were those on Daltonism (1840), voltaic induction, the simultaneous transmission of dispatches in opposite directions on the same wire, and on electric currents in plants. He contributed largely to the organization and arrangement of the splendid physical cabinet of the University of Geneva.

, a Russian chemist, has recently died, at the age of fifty-eight years. He was a pupil of Wurtz's, and, as a professor at Kazan and afterward at St. Petersburg, was largely instrumental in introducing modern chemical theories into his country. He took part in the foundation of the University for Women at St. Petersburg in 1879. His most important researches were on fatty bodies and the isomerism of the hydrocarbons. His treatise on organic chemistry was translated into German. He was interested in apiculture, on which he wrote some popular manuals, and was a believer in spiritualism, on which he also wrote a book—"Psychical Studies."

, an eminent French chemist, member of the Academy of Medicine and Professor in the School of Pharmacy, died on the 21st of October, aged eighty-four years. He studied chemistry in Dumas's laboratory; distinguished himself by numerous experiments; and was engaged during a large part of his life in teaching chemistry in various important schools in Paris.

F. R. S., who has recently died, at the age of eighty-one years, performed a long service in India, beginning in 1820. He was for some time Superintending Engineer in the Public Works Department for the Northwest Provinces; founded the system of magnetic observations in India; and was the author of a book of logarithms.

death, at Berlin, is reported of Dr. A. Fischer, who resided for a long time at Zanzibar, and by whose energy much has been added to our knowledge of the Kilimanjaro region