Abstract
THE annual report of the Committee of Management of the Indian Association for the Cultivation of Science for the year 1938 records a membership of 128 at the end of the year (Calcutta: Indian Association for the Cultivation of Science, 1939). Financial stringency has limited the purchase of reference books and periodicals for the library and also that of scientific apparatus, and for the same reason the Government of India has been unable to restore the ten per cent cut in the annual grant of 20,000 rupees for the year 1938–39. Appendixes include lists of periodicals available in the library and of books purchased as well as an account of research work carried out in the laboratories of the Association. An arrangement has been devised for magnetic measurements, at low temperatures in the range obtainable with liquid air, on typical paramagnetic salts of the rare earth and the iron group. Magnetic measurements on rhodochrosite, MnCO3, indicate that this crystal should prove a more suitable substance than the hydrated sulphates and selenates of manganese for use as the medium for the production of very low temperatures by the demagnetization method. Other studies have included the magnetic anisotropy of hydrated gadolinium sulphate, crystal-line fields in rare earth salts, magnetic studies in relation to valency problems and to crystal structure, magnetic studies on organic crystals of the aromatic class, and optical studies of the chrysene molecule. Other work has been concerned with the absorption spectra of arsenic and antimony sulphides and of the sulphur molecule.
Article PDF
Rights and permissions
About this article
Cite this article
Indian Association for the Cultivation of Science. Nature 144, 412 (1939). https://doi.org/10.1038/144412a0
Issue Date:
DOI: https://doi.org/10.1038/144412a0