| Description | On the same sheet: Invoice of tin shipped by Blewett & Co. for Boulton & Watt. Docketed “Answered 24th Feb. BW. Account of tin – 14 blocks and dimensions Wheal Treasury piston rod.” Summarised “Account of tin. Invoice for 14 blocks of tin. Gives dimensions of Wheal Treasury piston rod cone. Hornblower says Ting Tang 30 bushels per day.” |