Interfacial forces and phenomena in physiology : being the Herter lectures in New York in March, 1922 / by Sir William M. Bayliss; with seven diagrams.

  • Bayliss, William Maddock, Sir, 1860-1924.
Date:
[1923]
Catalogue details

Licence: In copyright

Credit: Interfacial forces and phenomena in physiology : being the Herter lectures in New York in March, 1922 / by Sir William M. Bayliss; with seven diagrams. Source: Wellcome Collection.

    158/228 (page 142)
    charge they possess, it is clear that freedom of access to the electrode is essential. If a sac consisting of a membrane which is impermeable to electrolytes, but permeable to water, a so-called “ semi-permeable ” membrane, containing a solution of some salt is immersed in a solution of the salt, that portion of the way between electrodes at opposite sides of the vessels which is occupied by the sac does not serve for the purpose of conducting the current. Hence the resistance of the system is greater than it would become if the membrane of the sac became free for the passage of ions, so that the whole space could serve for conducting the current. The cell-membrane is usually imperme- able to the ions present in the cell, so that this cell acts more or less as a non-conductor. If the corpuscles in blood are so treated as to produce haemolysis, it is clear that their resistance disappears and the conduc- tivity of the blood increases. This is the basis of Stewart’s method of determining the relative proportion of corpuscles and