nt metals In 1878 he made twelve tons of jelly. One bushel of ap- 3. Experiments were then tried with wires six inches in plea will makt five or six pounds. Not over twenty or i and of different lengths and thicknesses, that only tones with, their modulations could be produced; length and 0'001… … bear the tension required to reproduce sono- ELECTRO-THERMIC TELEPHONE. end of a board about three feet in length. rous vibrations, hence its low position. Near the opposite end was placed a post sup- 5. Very thin carbon pencil, 0'0625 inch diameter, was tried porting a hook, to which was attached…
