The work lists one hundred things the author claimed to have invented, including no.100 "A stupendious water-work" (a hydraulic machine upon which his claim as inventor of the steam-engine rests) and no.84 "An arithmetical instrument".
This copy has the rare 34pp. supplement (F1-G6) describing his water machine in more detail, which is not recorded in ESTC or the Norman copy, but was present in the Macclesfield copy (lot 2149). A note on the endleaf states "With additional pieces at the end, that I never saw in any other copy. J.B. [i.e. James Bindley] 1779."
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