Letter | Published:

X-Ray Interferences of Barium Sulphate in Fungi and Algae

Nature volume 180, pages 867868 (26 October 1957) | Download Citation



IN a paper on the constitution of cell walls of fungi, R. Frey1 concludes that several fungi and algae show in their cell contents or membranes an inorganic substance with an X-ray diagram corresponding to that of barium sulphate. Since, in our researches on. cell-walls of fungi2,3, X-ray interferences suggesting the presence of that substance were never observed, some further work was done in order to check Frey's statements.

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  1. 1.

    , Ber. Schweiz. Botan. Ges., 60, 227 (1950).

  2. 2.

    , and , “Antonie van Leeuwenhoek”, 19 (1953).

  3. 3.

    , Biochim. Biophys. Acta, 13, 1 (1954).

  4. 4.

    , , and , U.S. Dept. Agric. Tech. Bull. 1013 (1950).

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  1. Laboratory of General and Technical Biology, Technical University, Delft, Netherlands. May 23.

    • D. R. KREGER


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