Following up to the book above, here David Hulse concentrates on two engines which were significant steps in the development of steam power. They are the first engine to achieve rotary motion by the use of a crank and flywheel, and the first engine to have its rotational speed controlled by a governor. More good information for historians and modellers on the early stationary steam engine. 146 pages. 92 drawings and B & W photos. Paperback TEE Publishing