eam to flow through pipe, As the water evaporates below the upper line M, for the purpose of blowing an alarm whistle, N. The ap- top of the stand rises a sheath in which a piston moves, car- paratus is represented in Fig. 2 in the state of allowing the rying at its lower end a needle of proper… … always ready again. of his inclinations, the first impulse on entering a close, crowd- This device can be put on outside of the boiler, and its proper ed car is to open the window. The window, however, with place will be at the point of the middle gage cock. It can that irritating species of…
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