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a battery.
- The indistinct and muffled effect of the articulation is probably due to the imperfection
of the Receiving Instrument. The spring S was pressed so slosely between the ear and the
pole of the magnet that it had no room for vibration. Fig 4 shows new form of receiver to be constructed.
C is a capsule. M membrane. SS' steel spring
fastened to the membrane. The electro-magnet is arranged so as to have one negative pole
N and two positive poles PP. The spring SS' is in metallic contact with the positive poles
P,P', and the negative pole N can be adjusted nearer or farther from
the spring.
Noted by A.G.B.
March 12th 1876
G.G.H.
M.G.H. March 12th,/76
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 Volume 1  |
 10 Mar. 1876
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 Page 45 
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