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| | Chapter 6.text |
 | | The engine shown in the engraving consists of twoprincipal parts, the cylinder and the frame, which is a tapering columnhaving openings in the sides, to allow free access to all the working partswithin. |
 | | Butthis type of engine is gradually becoming superseded by the high-pressurecondensing engine, with considerable expansion, and with all expansion-gearin which the point of cut-off is determined by the governor. |
 | | The rotary engine is gradually coming into use for various special purposes,where small power is called for, and where economy of fuel is not important;but it has never yet competed, and may perhaps never in the future compete,with the reciprocating-piston engine where large engines are required,or where even moderate economy of fuel is essential. |
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