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2 Manuscript on spherical projection with numerous diagrams 106

€2,750.00

Description: Manuscript on spherical projection with numerous diagrams

ROBINSON, Frederick.
The projection of the sphere.
(Great Britain?, 1797-1798). 4to. With 1 folding leaf with 13 diagrams, including 3 three-dimensional ones, numerous diagrams in text, some full-page, some with different colours of ink. Contemporary vellum, blind-stamped double fillets along edges.
€ 2,750
Beautifully written and lavishly illustrated manuscript on trigonometry with calligraphic headings. The author opens with general definitions of different types of projections (pp. 1-4), and proceeds with discussing three types, orthographic (pp. 5-23), stereographic (pp. 24-73), and gnomonical (pp. 74-179). Each section starts with propositions followed by several trigonometrical problems. There are numerous accurately and finely drawn diagrams to illustrate the text. They are mostly small, but some are full-page. In some diagrams the author used coloured inks to highlight particular sections and/or lines. Three diagrams on the folding leaf have pasted parts that can be unfolded to create three-dimensional figures.
The note on the inside front cover reads "Frederic Robinson, December 19th 1797." We were unable to find any information on Robinson. A pencil note on the inside of the back cover states that he was an English professor for mathematics, who lived from 1746 till 1825.
Folding leaf torn along fold, hardly affecting illustration. Page 4 with a minor hole very slightly affecting text. A good copy of a manuscript textbook on trigonometry with attractive calligraphy and diagrams.
  • Number: 1010832
  • Dealer: Speculum Orbis Nauticum







 
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