Nothing is known of Barrow's family. He was initially a teacher of mathematics and navigation aboard ships of the Royal Navy. He retired before 1750 and devoted himself to writing and compiling dictionaries and other works related to his knowledge of mathematics and science.
Barrow's best-known work was Navigatio Britannica (1750), a practical handbook of navigation and charts still being advertised by its publisher, Mount & Page, in 1787. It included an examination of nautical instruments and explained the recently introduced vernier scale. Barrow seems to have been in close touch with nautical instrument makers while he was a naval instructor. It was not realized until the 20th century that John Barrow the "geographical compiler" mentioned in the British Dictionary of National Biography (1885 onwards) and the teacher of mathematics were the same person.[1]
In 1756 he published a geographical dictionary anonymously in London.[2]
In the same year, he also published the first edition of his principal work, A Chronological Abridgment or History of the Discoveries made by Europeans in the different parts of the world, whose introduction shows considerable knowledge of astronomical geography in relation to finding latitude and longitude by the stars. The French translation seems to have had more repute than the original work, but even in France Barrow's History of Discoveries was in a few years superseded by that of the Abbé Prévost.
Barrow created illustrations for Sketches Representing the Native Tribes, Animals, and Scenery of Southern Africa, working alongside Samuel Daniell.[3]
New and Universal Dictionary of Arts and Sciences (1751)
The Naval History of Great Britain (4 vols, 1758)
Geographical Dictionary (2 vols, 1759–60)
A New and Impartial History of England, from the Invasion of Julius Caesar to the Signing of Preliminaries of Peace, 1762 (1763)
Dictionary of Arts and Sciences (1764)
A Collection of Authentic, Useful, and Entertaining Voyages and Discoveries (3 vols, 1765)
References
^ODNB entry: Retrieved 18 July 2011. Subscription required, citing Taylor, E. G. R.: Mathematical Practitioners of Hanoverian England, 1714–1840 (Cambridge: CUP, 1966); Napoleon Bonaparte, "John Barrow". In: Napoleon’s Notes on English History made on the Eve of the French Revolution, Illustrated from Contemporary Historians and Referenced from the Findings of Later Research by Henry Foljambe Hall. New York: E. P. Dutton & Co., 1905, xviii–xx.