in a much shorter time contrivance is to measure and to record the amount than it would be conveyed by ordinary diffusion. of electricity in different regions of the atmosphere. carry her 8,000 knots at an average speed of 6% to 7 In addition to producing artificial miniature The device is to- be… … through one window, and a sim- rooms. All the available space on the ilar current of positive’ electric- deck is occupied with winches, anchors, cables, sound- ity induced into the stream of air proceeding through showers, mists, and thunderstorms, Prof. Gates con- ing apparatus, spare propellers,…
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![An illustration from Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] (1906)](https://img.insideoutlibrary.com/img/200/ia-cu31924022817674-152-41.webp)
