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[[preprinted]] 36  [[/preprinted]]

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[[preprinted]] 37 [[/preprinted]]

         Monday May 22nd - 1882.
Among the multitude of uses to which the method of varying the energy of an electric circuit described upon p.p. 23. to 35. can be applied, the following have occurred to me. 
[[diagram labeled A, B, and E ]]
(1) Copying phonograms by an electro-magnetic arrangement. The phonogram upon plate A can be made to move the spring E. back and forth upon the contact wheel B. and any suitable electro-magnetic apparatus placed in circuit with a battery, [[strikethrough]] and [[/strikethrough]] spring E. and contract wheel B. should reproduce the phonogram.
    For this purpose a high rate of rotation of B. would probably be advantageous, so that the separate interruption would not be recorded with the copied phonogram.
(2)  Regulating dynamo, and magneto electric currents, and machines. A contact wheel such as B, in the above diagram (see [[insertion]] also [[/insertion]] diagram p. 31) could be placed upon the axle of a dynamo-electric machine, and the current supplied to the electro-magneto of the machine regulated so as to keep the current in the outside circuit constant.
[[diagram of areas labeled A-F and outside circuit]]
A, represents the electro-magnet of a dynamo machine; B, the rotating armature; C, the contact brushes which receive the current generated by the armature; D, the conact wheel; E, the spring resting upon [[scribble]] D.
The current which charges the electro-magnet
Noted by S.T. May 22 - 1882 - over