BOND, Henry. The Longitude Found: or, a Treatise Shewing An Easie and Speedy way, as well by Night as by Day, to find the Longitude, having but the Latitude of the Place, and the Inclination of the Magnetical Inclinatorie Needle . London: Printed by W. Godbid and are to be sold by the Author, 1676.
BOND, Henry. The Longitude Found: or, a Treatise Shewing An Easie and Speedy way, as well by Night as by Day, to find the Longitude, having but the Latitude of the Place, and the Inclination of the Magnetical Inclinatorie Needle . London: Printed by W. Godbid and are to be sold by the Author, 1676. 4 o (193 x 142 mm). With the "This Treatise... hath been examined..." leaf. 7 engraved plates (the first with short break along platemark repaired). Contemporary presentation binding, gilt-panelled midnight blue morocco, spine gilt and with red morocco lettering piece, edges gilt; cloth folding case. Provenance : Richard Jones (armorial bookplate dated 1707 on title verso); Harrison D. Horblit (bookplate; his sale part I, Sotheby's London, 11 June 1974, lot 139: "Some copies have a plate of the inclinatory needle, but its absence from this copy, which is clearly in a presentation binding, as well from many other copies, suggests that it may have been an afterthought"). FIRST EDITION, including the extra leaf "This treatise... hath been examined" but without the plate of the inclinatory needle, which is absent in most copies. Bond's treatise had been long expected by the time of its publication in 1676. He first reviews the results of former experiments by William Bourrough, Gunter, Gellibrand and others and proceeds to his own researches to show the gradual decrease in easterly variation. "His method of finding longitude was by using the latitude as found by observation in conjunction with the dip as found at the same time as the inclinatory needle, and referring it to the prime meridian of London" (Commander J.B. Hewson, A History of the Practice of Navigation , Glasgow, 1963, pp. 141-142). Bond's theory was not wholly accepted, and received its sharpest criticism in Peter Blackborrow's The Longitude Not Found (1678). Nevertheless, Bond's was a "glorious failure," in Hewson's words, and inspired Edmund Halley to investigate further the theories of magnetism. Adams & Waters 241; Crone 258; Taylor Mathematical Practitioners 379; Wing B-3564.
BOND, Henry. The Longitude Found: or, a Treatise Shewing An Easie and Speedy way, as well by Night as by Day, to find the Longitude, having but the Latitude of the Place, and the Inclination of the Magnetical Inclinatorie Needle . London: Printed by W. Godbid and are to be sold by the Author, 1676.
BOND, Henry. The Longitude Found: or, a Treatise Shewing An Easie and Speedy way, as well by Night as by Day, to find the Longitude, having but the Latitude of the Place, and the Inclination of the Magnetical Inclinatorie Needle . London: Printed by W. Godbid and are to be sold by the Author, 1676. 4 o (193 x 142 mm). With the "This Treatise... hath been examined..." leaf. 7 engraved plates (the first with short break along platemark repaired). Contemporary presentation binding, gilt-panelled midnight blue morocco, spine gilt and with red morocco lettering piece, edges gilt; cloth folding case. Provenance : Richard Jones (armorial bookplate dated 1707 on title verso); Harrison D. Horblit (bookplate; his sale part I, Sotheby's London, 11 June 1974, lot 139: "Some copies have a plate of the inclinatory needle, but its absence from this copy, which is clearly in a presentation binding, as well from many other copies, suggests that it may have been an afterthought"). FIRST EDITION, including the extra leaf "This treatise... hath been examined" but without the plate of the inclinatory needle, which is absent in most copies. Bond's treatise had been long expected by the time of its publication in 1676. He first reviews the results of former experiments by William Bourrough, Gunter, Gellibrand and others and proceeds to his own researches to show the gradual decrease in easterly variation. "His method of finding longitude was by using the latitude as found by observation in conjunction with the dip as found at the same time as the inclinatory needle, and referring it to the prime meridian of London" (Commander J.B. Hewson, A History of the Practice of Navigation , Glasgow, 1963, pp. 141-142). Bond's theory was not wholly accepted, and received its sharpest criticism in Peter Blackborrow's The Longitude Not Found (1678). Nevertheless, Bond's was a "glorious failure," in Hewson's words, and inspired Edmund Halley to investigate further the theories of magnetism. Adams & Waters 241; Crone 258; Taylor Mathematical Practitioners 379; Wing B-3564.
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