ction, rigidly fixed tact point, b, to the key, K, through the back contact, come off, the flame changes to green. An iron cap is to the box, and a third, of square section, which is so e, to the bell, and thence to the ground, giving an then placed over the mouth of the retort, through nearly… … crystalline fracture. It does not rust easily and takes ELECTBICALLT OPEBATED TUNING FOBK. BATTEBT AND MAGNETO CALLS FOB TELEPHONE LINES. a good polish. Owing to this polish, it is used for lightly upon the other. A notch is filed in the carbon In the right hand figure, the telephone, T, is con-…
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