Indian Association for the Cultivation of Science

Abstract

THE annual report for the year 1947-48 of the Indian Association for the Cultivation of Science covers the year ending March 31, 1948, and in addition to the usual financial statement and balance sheet there are appended lists of books added to the library during the year, periodicals received by sub scription or exchange, members of the Council and of the Committee of Management and a report on the scientific work of the Association. In the latter Prof. K. Banerjee reports on R. K. Sen's continued study of the extra Laue reflexions of benzil, while over-exposed Laue photographs of pyrene have been taken by M. N. Dutta at 30-100° C. which show that the intensities invariably increase with temperature for all the different spots. M. Ganguly has found that very clear reflexions of the low-angle scattered X-radiation can be obtained by a crystal which is very slightly mis-set from the position for reflecting the direct beam. B. S. Basak has undertaken the complete determination of the structure of phenanthrene crystals by the Fourier analysis method, and, with A. K. Rai Choudhury, has made X-ray diffraction studies of beryllium - aluminium and tin - aluminium systems. X-ray studies of samples of Indian coals have been made by N. N. Gupta, and the mechanism of the formation of jutellite, a plastic from jute waste, is being studied by J. C. Maitra. B. K. Banerjee has continued to study the dispersion of metals and salts in glass, and Dr. A. Bose has undertaken a systematic investigation of crystal paramagnetism to determine whether group structure formed by the internal fields in the solid state persists in solution. A. Dutta has undertaken a systematic study of the magnetic and electric properties of semiconductors, such as tungstenite.