Page:Popular Science Monthly Volume 18.djvu/884

864 has reported concerning experiments on the endurance of vitality in the germs of disease. Seven sheep were led daily, for a few hours, to a piece of ground where some animals that had died of anthracoid disease, or charbon, had been buried twelve years previously. Two of the sheep caught the disease and died. As there was no grass on the spot for the animals to eat, M. Pasteur believes that they must have received the germs of the malady from smelling about the ground, as sheep are in the habit of doing.

author of several works on subjects of chemistry and mining, died in London, January 29th, at the age of seventy-one. He had held at different periods lectureships on metallurgy and chemistry at various educational establishments, and had been a constant contributor to scientific literature for more than half a century.

council of the Society of Arts has offered for its third Congress on Domestic Economy, which is to be held during the present year, prizes for papers not exceeding one thousand words each, written by teachers, and giving accounts of the best methods practiced by them, of their experience, and of the results of their teaching on the subjects of clothing and washing; the dwelling—warming, cleaning, and ventilation; rules for health, including the management of the sick-room, cottage income, expenditure, and savings; food, its composition and nutritive value, its functions, its preparation and culinary treatment. The papers are to be sent in to the secretary of the Society, London, by the first of May next.

of twenty-five lectures, for practical instruction in invertebrate paleontology, was opened in Philadelphia, March 8th, by Professor Angelo Heilprin, under the auspices of the Academy of Natural Sciences of that city. The plan of instruction embraces the examination of the life histories of the various geological formations, the discussion of the biological relations of past organic forms, and the practical determination of those forms for the purposes of paleontological inquiry. A course of ten lectures for practical instruction in determinative mineralogy was begun by Professor H. Carvill Lewis, March 15th.

were formerly counted as important aids to the fisheries of the North Sea coasts, by driving immense numbers of small fishes toward the land. Now, according to M. Bogdanoff, of the recent Russian North Sea expedition, since the whales have been pursued with steamers and bullets instead of sailing-vessels and the old harpoon, their destruction has greatly increased, and the number of small fish coming to the coast has correspondingly diminished. The codfishing has been nearly extinguished in parts of the Varanger Fiord region in consequence of the presence of sharks, which, attracted by the fat thrown into the sea at Varanger, destroy the fish. Both of these instances illustrate the interdependence which exists among the different kinds of animals inhabiting the same region.

in conjunction with Professor G. Fritsch. is about to publish, under the auspices of the Royal Academy of Sciences at Berlin, the observations and experiments made by the late Dr. Karl Sachs on the electrical eel (Gymnotus eletricus), in South America, during 1876 and 1877.

has been endeavoring to determine by experiment what proportion of carbonic oxide in the atmosphere is necessary as a minimum to produce the death of animals. With a dog the proportion varied from to  a hare was not asphyxiated till it had been exposed to an atmosphere containing  of carbonic oxide; a sparrow was killed by confinement in an atmosphere charged with only  of the gas. A very wide range of difference is thus shown to exist in the susceptibility of different species to this poison.

was engaged at the time of his death in the study of the silicified seeds of the carboniferous beds of St. Etienne and Autun, France. His investigations have been published by some of his family. Among the results was the discovery in fossil seeds of a pollen-bearing chamber hitherto unknown in any living plant, in which the pollen was held in reserve till the time of fecundation. M. Brongniart, remarking that the palæozoic plants exhibiting this disposition were related to the cycades, believed that the modern cycas might also possess it, and found his belief confirmed by an examination of plants of that genus. This is said to be the first time that paleontological studies have led to an anatomical discovery in living beings.

F. R. S., a well-known writer on palæozoic fossils, died in London, February 10th, at the advanced age of eighty-eight years. The greater part of his life was spent in Canada and the United States. He contributed a paper on a subject of American geology to "Silliman's Journal," as far back as 1820. His best-known works are two "Thesauri," relating to the flora and fauna of the Silurian and the Devonian and Carboniferous formations, which were published in 1868 and 1878. He was the founder of the Bigsby medal, which is awarded at the annual meetings of the Geological Society of London.