THE PERMEABILITY OF PROTOPLASM TO IONS

Abstract
An analysis of the author''s data, showing the amounts of arsenic found by chemical analysis in the protoplasm, sap, and wall, respectively, of Valonia shows that the penetration of A.S2O3 and AS2O6 can not be explained according to the hypothesis (advocated by Osterhout) that only undissociated molecules can penetrate living protoplasm.

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