International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 442
PNEUMATICS. 431 the lower part of the globe C hy a long tube D, and anothertube E connects the two globes. A third tube passesthrough the dish A to the lower part of the globe B. Thislast tube being taken out, the globe B is partially filledwith water; the tube is then replaced and water is…
Railroad engineering
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