A Dictionary of science, literature, and art [electronic resource]: comprising the history, description, and scientific principles of every branch of human knowledge; with the derivation and definition of all the terms in general use (1844)
Brande, William Thomas, 1788-1866, Cauvin, Joseph · New York : Harper & brothers · leaf 1181
ject to great varieties. Some-times they are opened alternately in pairs by two distinctlevers, and driven by two pieces attached to the air-pumprod ; but more generally the admission of steam to the cylin-der is regulated by a single moveable piece, called a slide. Slides are very various in their…
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