ONE-SECTION OF CENTRAL OFFICE SWITCH. The call box as shown in Fig. 1 is designed for sixtysubscribers, while the central appliance in Fig. 2 hassixty wires, but only magnets and ratchet wheels enoughfor twenty-five subscribers. In making a call the subscriber presses the handle onthe face of the… … •;v Fig. 2.-THE HOUTS TELEPHONE-CENTRAL OFFICE APPLIANCE, Chemical Effects of the Suns Rays. The old text books used to tell us that the rays of thesun contain three things : light, heat, and actinism.We know now that these three things are one, or ratherthat the effects ascribed to them are…
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