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 Volume 1  |
 20 Mar. 1876
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was that so loud as the sound produced by the Tuning-fork. Perhaps
the larger the vibrating surface in contact with the water the better
the effect.
Thoughts
Float piece of metal on water and set it in vibration by attaching
it to stretched membrane.
Noted by A.G.B.
March 20th 1876
Last Sunday I read an article in Culley's
Handbook upon the resistance of solids + liquids which has
materially altered my ideas concerning increasing the resistance of
the water-cells as a means of increasing the amplitude of the
electrtical undulations. I find that pure water offers an enormous
resistance to the passage of an electrical current. If I remember
rightly pure water opposes about 8000 million times as much
resistance to the current as copper wire does; and acidulated water
(1, SO4 to 11 water) offers 1 1/2 million times the resistance of copper.
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 Volume 1  |
 23 Mar. 1876
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 Page 67 
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