Hermann's phenomenon / by G.S. Walpole.

  • Walpole, George Stanley.
Date:
[1914?]
Catalogue details

Licence: In copyright

Credit: Hermann's phenomenon / by G.S. Walpole. Source: Wellcome Collection.

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    clinging to the glass are gently removed and the large taps shut. The fluid which is to occupy C and D is now used to rinse the excess of “ middle fluid ” out of the apparatus, which is then placed in position in the wooden stand. Fig. 2.—Section of apparatus. (Half scale.) A. Silver anode in normal sodium chloride. B. Copper cathode in cupric chloride. “ Side tube fluid” is poured in until it reaches a mark 15 mm. from the top of one of the four upright tubes. The small tap e is open, and by a little manipulation any air bubbles in this small transverse tube are removed. Into the tops of the tubes C and D rubber stoppers are introduced each carrying a