Abstract
THE scientific communications to the Czech Academy of Sciences during 1928 and 1929 have now been published in French or English in volumes 29 and 30 of the Bulletin International of the Academy. Among the papers presented are several by Dr. F. Nĕejc dealing with his palæobotanical investigations on some quaternary deposits in the district around Ruz̆omberok in Slovakia. Dr. R. Kettner has made a similar study of the geological formations in the Hron Valley, and Prof. Ulrich describes the minerals variscite and barrandite from Tr̆enice and also a Slovakian rutile. Dr. J. Hahn's account of the life history of Monocystis Mrazeki is illustrated with some fine photomicrographic plates, whilst M. Uher's communication dealing with the genesis of nerve elements cultivated in vitro is similarly illustrated. Dr. O. Jirovec has succeeded in observing and recording on a coloured plate some twenty stages in the nuclear division of Trypanosoma evansi. His observations apparently contradict the earlier ones of Roskin. In pure chemistry, Prof. Tomic̆ek and Dr. Jansý have made an exhaustive study of the methods available for determining mixed halides in connexion with the analyses of bromides and iodides in spa and thermal waters. The improvements which they have introduced enabled them to give more accurate and detailed results. It was long supposed that the waters from Darkov, Silesia, were the richest in iodine, but according to these authors the waters from C̆iz in Slovakia and Bad Hall in Austria are still richer, with a total iodine content of more than 28 mgm. per litre.
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Czechoslovakian Contributions to Science. Nature 130, 271–272 (1932). https://doi.org/10.1038/130271d0
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DOI: https://doi.org/10.1038/130271d0