TELEGRAPH BUILDING, NEW YORK. ping it into the open tubes, G, through which it falls by its We have recently examined, with considerable interest, own gravity, landing in the box, H, whence it is again taken the pneumatic system of transmitting telegraphic messages out to be filled and started back… … is provided with a cover opened or tion. In returning, they simply fall closed at pleasure, thus, as will be through the tube and slide into a seen further on, throwing any tube into or out of action, suitable receptacle. This plan may be operated with hori- or moderating the air current therein.…
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