"The Armillary Sphere" in Benjamin Martin's "The young gentleman and lady's philosophy", 1755. A discourse on things scientific, keeping on the right side of the Almighty of course, but noting that the planetary mass estimates would improve on the next Transit of Venus. Just happened that the next Transit coincided with the book finding me. Herschel's house is in nearby Bath and is worth visiting to see the musician's star gazing stuff that allowed him to discover Uranus. Good on the Electric Kite Experiment devised by Jacques deRomas in 1752....the one half-inched by an underhand Ben.
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