| Description | Volume. Engine Calculation. 1783—1791.
This notebook follows on from the one above, but the tables are slightly more detailed. Tables of performance of Dolcoath, Wheal Virgin Eastern, Poldice Eastern, Poldice New, Ale & Cakes, Briggan, Wheal Hawk, Wheal Maid New Double and Polgooth Old engines. The front contains a list of 34 various mine engines, and there are some notes in Matthew Boulton’s hand at the back. |