| Description | The text is by a a Cornish engineer who had “sometimes one or two, and sometimes five [Watt engines] at a time under my care. Was also aquainted with Newcomen’s or the old atmopsherick engines long before B. & Watt’s were brot. into Cornwall.” Describes making a model of a Watt engine and showing it to the Adventurers of Poldice mine, the advantages of Watt’s engine, Hornblower and Bull, trials on various engines, including Bull’s engine at Balcoath, 7 Sep. 1792. |