Abstract
American Journal of Science, March.—Studies of Eocene Mammalia in the Marsh collection, Peabody Museum, by J. L. Wortman. Part ii. Primates.—On eerie chromate, by P. E. Browning and C. P. Flora. An excess of chromic acid precipitates a eerie chromate of the composition Ce(CrO4)2,2H2O from solutions of cerium salts. Although the sulphates of lanthanum, didymium and yttrium were present, these metals were not present in the precipitate.—The effects of changes of temperature on permanent magnets, by H. B. Loomis. After giving a historical résumé of previous work on this subject, experiments are described showing the changes in the magnetic moment of magnets of different lengths, but of the same cross section, and on the change in distribution due to change of temperature.—On the chemical composition of axinite, by W. E. Ford. Expressed as an orthosilicate, the formula is found to be Ca7Al4(SiO4)8, in which the calcium may be in part replaced by varying amounts of Mn, Fe, Mg, and hydrogen, while a little Fe is isomorphous with the Al.—The electrical conductivity and absorption of energy in the electrodeless discharge, by Bergen Davis.—The geological structure of New Mexican Bolson Plains, by C. R. Keyes.—Note on the marine turtle Archelon. (1) On the structure of the carapace; (2) associated fossils, by G. R. Wieland.—The ionisation of water and of phosphorus nuclei, by C. Barus.—On a method of demonstrating Newton's rings by transmitted light, by Davis. If a number of wire rings of the same size be mounted in parallel planes, and dipped together in a soap solution, their planes being kept perpendicular to its surface, a series of films results through, which light can be passed and caught on a sheet of paper, showing very beautifl colour phenomena.—Note on the amphibole Hudsonite previously called a pyroxene, by S. Weidman.
Article PDF
Rights and permissions
About this article
Cite this article
Scientific Serial . Nature 67, 573 (1903). https://doi.org/10.1038/067573a0
Issue Date:
DOI: https://doi.org/10.1038/067573a0