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ROBERT BOYLE (1627-1691)

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Originally appearing in Volume V04, Page 356 of the 1911 Encyclopedia Britannica.
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ROBERT See also:BOYLE (1627-1691)  , See also:English natural philosopher, seventh son and fourteenth See also:child of See also:Richard See also:Boyle, the See also:great See also:earl of See also:Cork, was See also:born at See also:Lismore See also:Castle, in the See also:province of See also:Munster, See also:Ireland, on the 25th of See also:January 1627 . While still a child he learned to speak Latin and See also:French, and he was only eight years old when he was sent to See also:Eton, of which his See also:father's friend, See also:Sir See also:Henry See also:Wotton, was then See also:provost . After spending over three years at the See also:college, he went to travel abroad with a French See also:tutor . Nearly two years were passed in See also:Geneva; visiting See also:Italy in 1641, he remained during the See also:winter of that See also:year in See also:Florence, studying the " paradoxes of the great See also:star-gazer " Galileo, who died within a See also:league of the See also:city See also:early in 1642 . Returning to See also:England in 1644 he found that his father was dead and had See also:left ' in which he criticized the " experiments whereby vulgar Spagyhim the See also:manor of Stalbridge in See also:Dorsetshire, together with estates in Ireland . From that See also:time he gave up his See also:life to study and scientific See also:research, and soon took a prominent See also:place in the See also:band of inquirers, known as the " Invisible College," who devoted themselves to the cultivation of the " new See also:philosophy." They met frequently in See also:London, often at See also:Gresham College; some of the members also had meetings at See also:Oxford, and in that city Boyle went to reside in 1654 . See also:Reading in 1657 of See also:Otto von See also:Guericke's See also:air-See also:pump, he set himself with the assistance of See also:Robert See also:Hooke to devise improvements in its construction, and with the result, the " machina Boyleana " or " Pneumatical See also:Engine," finished in 1659, he began a See also:series of experiments on the properties of air . An See also:account of the See also:work he did with this See also:instrument was published in 166o under the See also:title New Experiments Physico-See also:Mechanical touching the See also:spring of air and its effects . Among the critics of the views put forward in this See also:book was a Jesuit, Franciscus See also:Linus (1595-1675), and it was while answering his objections that Boyle enunciated the See also:law that the See also:volume of a See also:gas varies inversely as the pressure, which among English-speaking peoples is usually called after his name, though on the See also:continent of See also:Europe it is attributed to E . See also:Mariotte, who did not publish it till 1676 . In 1663 the " Invisible College " became the " Royal Society of London for improving natural knowledge," and the See also:charter of See also:incorporation granted by See also:Charles II. named Boyle a member of the See also:council . In 168o he was elected See also:president of the society, but declined the See also:honour from a See also:scruple about oaths .

In 1668 he left Oxford for London where he resided at the See also:

house of his See also:sister, See also:Lady See also:Ranelagh, in See also:Pall Mall . About 1689 his See also:health, never very strong, began to fail seriously and he gradually withdrew from his public engagements, ceasing his communications to the Royal Society, and advertising his See also:desire to be excused from receiving guests, " unless upon occasions very extraordinary," on Tuesday and See also:Friday forenoon, and Wednesday and Saturday afternoon . In the leisure thus gained he wished to " recruit his See also:spirits, range his papers," and prepare some important chemical investigations which he proposed to leave " as a See also:kind of Hermetic See also:legacy to the studious disciples of that See also:art," but of which he did not make known the nature . His health became still worse in 1691, and his See also:death occurred on the 3oth of See also:December of that year, just a See also:week after that of the sister with whom he had lived for more than twenty years . He was buried in the See also:churchyard of St See also:Martin's in the See also:Fields, his funeral See also:sermon being preached by his friend See also:Bishop See also:Burnet . Boyle's great merit as a scientific investigator is that he carried out the principles which See also:Bacon preached in the Novum Organum . Yet he would not avow himself a follower of Bacon or indeed of any other teacher: on several occasions he mentions that in See also:order to keep his See also:judgment as unprepossessed as might be with any of the See also:modern theories of philosophy, till he was " provided of experiments " to help him See also:judge of them, he refrained from any study of the Atomical and the Cartesian systems, and even of the Novum Organum itself, though he admits to " transiently consulting " them about a few particulars . Nothing was more See also:alien to his See also:mental temperament than the See also:spinning of hypotheses . He regarded the acquisition of knowledge as an end in itself, and in consequence he gained a wider outlook on the aims of scientific inquiry than had been enjoyed by his predecessors for many centuries . This, however, did not mean that he paid no See also:attention to the See also:practical application of See also:science nor that he despised knowledge which tended to use . He himself was an alchemist; and believing the transmutation of metals to be a possibility, he carried out experiments in the See also:hope of effecting it; and he was instrumental in obtaining the See also:repeal, in 1689, of the See also:statute of Henry IV. against multiplying See also:gold and See also:silver . With all the important work he accomplished in physics—the enunciation of Boyle's law, the See also:discovery of the See also:part taken by air in the See also:propagation of See also:sound, and investigations on the expansive force of freezing See also:water, on specific gravities and refractive See also:powers, on crystals, on See also:electricity, on See also:colour, on See also:hydrostatics, &c.—See also:chemistry was his See also:peculiar and favourite study .

His first book on the subject was The Sceptical Chemist, published in 1661, rists are wont to endeavour to evince their See also:

Salt, See also:Sulphur and lllercury to be the true Principles of Things." For him chemistry was the science of the See also:composition of substances, not merely an See also:adjunct to the arts of the alchemist or the physician . He advanced towards the modern view of elements as the undecomposable constituents 'of material bodies; and understanding the distinction between mixtures and compounds, he made considerable progress in the technique of detecting their ingredients, a See also:process which he designated by the See also:term " See also:analysis." He further supposed that the elements were ultimately composed of particles of various sorts and sizes, into which, however, they were not to be resolved in any known way . Applied chemistry had to thank him for improved methods and for an extended knowledge of individual substances . He also studied the chemistry of See also:combustion and of respiration, and made experiments in See also:physiology, where, however, he was hampered by the "tenderness of his nature " which kept him from anatomical dissections, especially of living animals, though he knew them to be " most instructing." Besides being a busy natural philosopher, Boyle devoted much time to See also:theology, showing a very decided leaning to the practical See also:side and an indifference to controversial polemics . At the Restoration he was favourably received at See also:court, and in 1665 would have received the provostship of Eton, if he would have taken orders; but this he refused to do, on the ground that his writings on religious subjects would have greater See also:weight coming from a layman than a paid See also:minister of the See also:Church . He spent large sums in promoting the spread of See also:Christianity, contributing liberally to missionary See also:societies, and to the expenses of translating the See also:Bible or portions of it into various See also:languages . By his will he founded the Boyle lectures, for proving the See also:Christian See also:religion against " notorious infidels, viz. atheists, theists, pagans, See also:Jews and Mahommedans," with the proviso that controversies between Christians were not to be mentioned . In See also:person Boyle was tall, slender and of a See also:pale countenance . His constitution was far from robust, and throughout his life he suffered from feeble health and See also:low spirits . While his scientific work procured him an extraordinary reputation among his contemporaries, his private See also:character and virtues, the See also:charm of his social See also:manners, his wit and powers of conversation, endeared him to a large circle of See also:personal See also:friends . He was never married . His writings are exceedingly voluminous, and his See also:style is clear and straightforward, though undeniably prolix .

The following are the more important of his See also:

works in addition to the two already mentioned :—Considerations touching the Usefulness of Experimental Natural Philosophy (1663), followed by a second part in 1671; Experiments and Considerations upon See also:Colours, with Observations on a See also:Diamond that Shines in the Dark (1663); New Experiments and Observations upon See also:Cold (1665) ; Hydrostatical Paradoxes (1666); Origin of Forms and Qualities according to the Corpuscular Philosophy (1666); a continuation of his work on the spring of air (1669) ; tracts about the Cosmical Qualities of Things, the Temperature of the Subterraneal and Submarine Regions, the Bottom of the See also:Sea, &c. with an Introduction to the See also:History of Particular Qualities (1670); Origin and Virtues of Gems (1672); Essays of the See also:strange Subtilty, great Efficacy, determinate Nature of Effluviums (1673) ; two volumes of tracts on the Saltness of the Sea, the Hidden Qualities of the Air, Cold, See also:Celestial Magnets, Animadversions on See also:Hobbes's Problemata de Vacuo (1674) ; Experiments and Notes about the Mechanical Origin or See also:Production of Particular Qualities, including some notes on electricity and See also:magnetism (1676) ; Observations upon an artificial Substance that Shines without any Preceding See also:Illustration (1678) ; the Aerial Noctiluca (1680) ; New Experiments and Observations upon the Icy Noctiluca (1682) ; a further continuation of his work on the air; See also:Memoirs for the Natural History of the Human See also:Blood (1684); See also:Short Memoirs for the Natural Experimental History of See also:Mineral See also:Waters (1685); Medicina Hydrostatica (1690); and Experiments et Observationes Physicae (1691) . Among his religious and philosophical writings were: Seraphic Love, written in 1648, but not published till 1660; an See also:Essay upon the Style of the See also:Holy Scriptures (1663); Occasional Reflections upon Several Subjects (1665), which was ridiculed by See also:Swift in A Pious Meditation upon a Broomstick, and by See also:Butler in An Occasional Reflection on Dr Charlton's Feeling a See also:Dog's See also:Pulse at Gresham College; Excellence of Theology compared with Natural Philosophy (1664); Some Considerations about the Reconcileableness of See also:Reason and Religion, with a Discourse about the Possibility of the Resurrection (1675); Discourse 356 of Things above Reason (1681); High Veneration See also:Man owes to See also:God (1685); A See also:Free Inquiry into the vulgarly received Notion of Nature (1686) ; and the Christian Virtuoso (1690) . Several other works appeared after his death, among them The See also:General History of the Air designed and begun (1692) ; a " collection of choice remedies," Medicinal Experiments (1692—1698) ; and A Free Discourse against Customary See also:Swearing (1695) . An incomplete and unauthorized edition of Boyle's works was published at Geneva in 1677, but the first See also:complete edition was that of See also:Thomas See also:Birch, with a life, published in 1744, in five See also:folio volumes, a second edition appearing in 1772 in six volumes, 4to . Boyle bequeathed his natural history collections to the Royal Society, which also possesses a portrait of him by the See also:German painter, See also:Friedrich Kerseboom (1632—1690) .

End of Article: ROBERT BOYLE (1627-1691)
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