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BARROW, ISAAC (1630-1677)

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Originally appearing in Volume V03, Page 440 of the 1911 Encyclopedia Britannica.
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BARROW, See also:ISAAC (1630-1677) , See also:English mathematician and divine, was the son of See also:Thomas Barrow, a See also:linen-See also:draper in See also:London, belonging to an old See also:Suffolk and See also:Cambridgeshire See also:family. His See also:uncle was See also:Bishop Isaac Barrow of St See also:Asaph (1614-168o). He was at first placed for two or three years at the See also:Charterhouse school. There, however, his conduct gave but little hopes of his ever succeeding as a See also:scholar. But after his removal from this See also:establishment to See also:Felsted school in See also:Essex, where See also:Martin See also:Holbeach was See also:master, his disposition took a happier turn; and having soon made considerable progress in learning, he was in 1643 entered at St See also:Peter's See also:College, and afterwards at Trinity College, See also:Cam-See also:bridge, where he applied himself to the study of literature and See also:science, especially of natural See also:philosophy. He at first intended to adopt the medical profession, and made some progress in See also:anatomy, See also:botany and See also:chemistry, after which he studied See also:chronology, See also:geometry and See also:astronomy. He then travelled in See also:Trance and See also:Italy, and in a voyage from See also:Leghorn to See also:Smyrna gave proofs of See also:great See also:personal bravery during an attack made by an Algerine pirate. At Smyrna he met with a See also:kind reception from the English See also:consul, Mr Bretton, upon whose See also:death he afterwards wrote a Latin See also:elegy. From this See also:place he proceeded to See also:Constantinople, where he received similar civilities from See also:Sir Thomas Bendish, the English See also:ambassador, and Sir See also:Jonathan See also:Dawes, with whom he afterwards contracted an intimate friendship. While at Constantinople he read and studied the See also:works of St See also:Chrysostom, whom he preferred to all the other Fathers. He resided in See also:Turkey somewhat more than a See also:year, after which he proceeded to See also:Venice, and thence returned See also:home through See also:Germany and See also:Holland in 1659. Immediately on his reaching See also:England he received ordination from Bishop Brownrig, and in 166o he was appointed to the See also:Greek professorship at See also:Cambridge.

When he entered upon this See also:

office he intended to have prelected upon the tragedies of See also:Sophocles; but he altered his intention and made choice of See also:Aristotle's See also:rhetoric. His lectures on this subject, having been See also:lent to a friend who never returned them, are irrecoverably lost. In See also:July 1662 he was elected See also:professor of geometry in See also:Gresham College, on the recommendation of Dr See also:John See also:Wilkins, master of Trinity College and afterwards bishop of See also:Chester; and in May 1663 he was chosen a See also:fellow of the Royal Society, at the first See also:election made by the See also:council after obtaining their See also:charter. The same year the ;executors of See also:Henry See also:Lucas,, who, according to theterms of his will, had founded a mathematical See also:chair at Cambridge, fixed upon Barrow as the first professor; and although his two professorships were not inconsistent with each other, he See also:chose to resign that of Gresham College, which he did on the 20th of May 1664. In 1669 he resigned his mathematical chair to his See also:pupil, Isaac See also:Newton, having now determined to renounce the study of See also:mathematics for that of divinity. Upon quitting his professorship Barrow was only a fellow of Trinity College; but his uncle gave him a small See also:sinecure in See also:Wales, and Dr See also:Seth See also:Ward, bishop of See also:Salisbury, conferred upon him a prebend in that See also:church. In the year 167o he was created See also:doctor in divinity by See also:mandate; and, upon the promotion of Dr See also:Pearson to the see of Chester, he was appointed to succeed him as master of Trinity College by the See also:king's patent, bearing the date of the 13th of See also:February 1672. In 1675 Dr Barrow was chosen See also:vice-See also:chancellor of the university. He died on the 4th of May 1677, and was interred in See also:Westminster See also:Abbey, where a See also:monument, surmounted by his bust, was soon after erected by the contributions of his See also:friends. By his English contemporaries Barrow was considered a mathematician second only to Newton. See also:Continental writers do not place him so high, and their See also:judgment is probably the more correct one. He was undoubtedly a clear-sighted and able mathematician, who handled admirably the severe geometrical method, and who in his Method of Tangents approximated to the course of reasoning by which Newton was afterwards led to the See also:doctrine of ultimate ratios; but his substantial contributions to the science are of no great importance, and his lectures upon elementary principles do not throw much See also:light on the difficulties surrounding the border-See also:land between mathematics and philosophy.

(See INFINITESIMAL CALCULUS.) His Sermons have See also:

long enjoyed a high reputation; they are weighty pieces of reasoning, elaborate in construction and ponderous in See also:style. His scientific works are very numerous. The most important are:—Euclid's Elements; See also:Euclid's Data; See also:Optical Lectures, read in the public school of Cambridge; Thirteen Geometrical Lectures; The Works of See also:Archimedes, the Four Books of See also:Apollonius's Conic Sections, and See also:Theodosius's Spherics, explained in a New Method ; A Lecture, in which Archimedes' Theorems of the See also:Sphere and See also:Cylinder are investigated and briefly demonstrated ; Mathematical Lectures, read in the public See also:schools of the university of Cambridge. The above were all written in Latin. His English works have been collected and published in four volumes See also:folio. See Ward, Lives of the Gresham Professors, and See also:Whewell's See also:biography prefixed to the 9th See also:volume of See also:Napier's edition of Barrow's -Sermons.

End of Article: BARROW, ISAAC (1630-1677)

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