[PrevPage] [Next] [INDEX ]  Volume 1   11 Apr. 1876    Page 103  [Source] [ NOTES ]
    M is a membrane carrying c' + p' cork + pencil dipping into mercury.
    Upon plucking A with the finger a sound was audible at z, but very faintly.

  1. The battery was increased to eight cells. Then each pluck of the spring A was clearly audible at z.
    Cannot be sure whether the current was undulatory or intermittent. I am inclined to suspect that it was the latter.

  2. When the circuit was made + broken at A a distinct click was audible at z.

Noted April 11th by A.G.B.
Copied April 13th by M.G.H.
[PrevPage] [Next] [INDEX ]  Volume 1   11 Apr. 1876    Page 103  [Source] [ NOTES ]