Ornament Details
016190080000130_0
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Parker's projection of the longitude at sea: whereby the mariners may be enabled to correct their accounts thereof, as often as they shall have the benefit of a clear sky and calm sea, at the time of the moon's visible southing. Communicated to and approved of by Dr. Halley, Astronomer Royal. By Benjamin Parker.
printed by A. Ayscough for S. Hodgkinson in, Derby, and sold by the booksellers of London and Westminster and at most seaport towns in England: also by Jer Roe, Bookseller in Derby
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