Robert Blair

A Description of an Accurate and Simple Method of Adjusting Hadley's Quadrant for the Back Observation. by Mr. Robert Blair. Published by Order of the Committee of Longitude.

The 18th century was a wealth of knowledge, exploration and rapidly growing technology and expanding record-keeping made possible by advances in the printing press. In its determination to preserve the century of revolution, Gale initiated a revolution of its own: digitization of epic proportions to preserve these invaluable works in the largest archive of its kind. Now for the first time these high-quality digital copies of original 18th century manuscripts are available in print, making them highly accessible to libraries, undergraduate students, and independent scholars.
Medical theory and practice of the 1700s developed rapidly, as is evidenced by the extensive collection, which includes descriptions of diseases, their conditions, and treatments. Books on science and technology, agriculture, military technology, natural philosophy, even cookbooks, are all contained here.
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British Library

T112545

With two leaves containing: "Works published by the Commissioners of Longitude, and sold by Peter Elmsly".

[London : Peter Elmsly, 1788]. 20,[4]p.,plate ; 8°