| Description | Volume. Performance of Cornish Engines. 1781—1782. 81 folios.
Cover missing. It may have orignally been titled “Engine Calculation.” Hand-written tables of the performance of the Ale & Cakes, Poldory, Tresavean, Dolcoath, Wheal Chance, Wheal Treasury, Pool, Tingtang, Chacewater, Wheal Union, Kestell Adit, Wheal Crenver, Trevascus, Hallamanin, Scorrier, and Wheal Virgin (St. Hilary) engines. The back page contains a list of engines. |