| Description | 'September 1792.' (This item is a small hardback notebook with a green cover. On the cover is written the preceding inscription. The notebook contains observations, calculations, and diagrams relating to engines and mining. Pages of notes have headings such as; 'Tin Croft Engine' and 'Coals and Boilers for Relative Engines.' The notebook also contains some dated entries, for example; 'Experiment. October 27th - with a tube.') |