| Description | Includes notes by James Watt on the back of the letter of 'Experiments on Dr. Roebuck's engine.' Difficulty in crediting the facts of Mr Watt's experiments on steam. Invites him and Dr Black to Kinneil. Advises pushing forwards the trials with his engine. Pleased with the microscope sent him. Mrs Roebuck reminds him of the guitar. Wants a thermometer and a pair of small scales. (Muirhead no. 5) |