Description of a piece of mechanism contrived by James Ferguson, for exhibiting the time, duration, and quantity, of solar eclipses, in all places of the earth / by James Ferguson.

pp. 519-26 p., 1 folded leaf of plates :, 30 cm.

QB551 .F4 1754 c.1

Solar eclipses., Astronomical instruments -- Early works to 1800.

[London :: Royal Society of London, 1754?]

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