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1
    Sunday May 7th. 1882
Apparatus for testing the idea noted at the foot of p. 48, Vol. 6, was completed yesterday, and the following experiments were made with it:
A. Type - metal plate covered with paraffine-wax; B, hardened steel style, a full sized plan view of which is shown in Fig. 2; C, brass support for style; D, ordinary iron telephone diaphragm; E, fine cotton thread stretched from the center of D, to the cutting end of style B.; F, wooden base for apparatus, attached to the slide rest of lathe, so as to receive motion parallel to the disk A.; G, hearing tube.

Fig. 1
[[drawn image of apparatus;  Cross section of a horizontal disk, to the right a style "B" is positioned by a vertically mount "C" which is attached to the left end of base "F". The style is connected by a thread "E" to the center diaphragm "D" of a telephone "G". The telephone is mounted to the right end of base "F".]]

[[drawn image of Fig. 2 in margin; a vertical cross section of the style, a square base tapered to a point. To the right, a short horizontal line connects to a vertical line which parallels the length of the style]]

   The paraffine-wax was first turned off smooth, a spiral groove was then cut in it with an ordinary turning tool, and the phonogram was cut upon the ridges thus formed. It was observed that the amplitude of the vibration of B, was very much less than that of D, caused probably by the elasticity of the thread connecting them together.
   The vibrations recorded upon the wax were very small but could ^ [[be]] readily [[strikeout]] be [[/strikeout]] distinguished by the naked eye. The following apparatus was used for reproducing the sounds.

[[drawn image of apparatus, Cross section of a horizontal disk, a "[[?Blunt"]] "style" is connected by a "thread" to a "rubber band" to a "thread" to the center of the diaphragm "D" of a telephone]]

The case D, in which the diaphragm is mounted was held in the hand for the purpose of getting rid of the direct communication of the sounds through the solid parts of the apparatus. [[line]]
   Noted by S.T. May 7-1882- over