now so general, was conceived, if not realized, at about extra trouble involved, and the additional tax on the inder compound. We are assuming, of course, that pis- the same date. endurance of firemen and engineers, we repeat that ton valves are used throughout in both. Steam of 160 In 1868 Edison… … establishment at Orange, cool berth by comparison. where his shops for construc- Every rise in the pressure tion and experiment, greatly of steam has made the for- ward end of the engine room worse and worse. The cylinder bottoms cannot be lagged, and to stand His telegraphic inventions, which…
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