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The Diligence with which he pursued his Studies is sufficiently evident from his success. Statelinen and Generals may grow great by unexpected Accidents, and a fortunate Concurrence of Circumstances, neither procured nor foreseen by themselves. But Reputation in the learned World must be the Effect of Industry and Capacity. Boerhaave lost none of his Hours; but, when he bad aitained one Science, attempted another. He added Phyfick to Divinity, Chymistry to the Mathematicks, and Botany to Anatomy. He examined Systems by Experiments, and formed Experiments into Systems. He neither neglected the Observations of others, nor blindly submitted to celebrated Names. He neither thought so highly of himself as to imagine he could receive no Light from Books, nor so meanly as to believe he could discover nothing but what was to be learned from them. He examined the Observations of other Men, but trusted only to his own.

Nor was he unacquainted with the Art of recommending Truth by Elegance, and of embellishing Philosophy by polite Literature: He knew that but a small part of Mankind will sacrifice their Pleasure to their Improvement; and those Authors who would find many Readers, inust endeavour to please while they instruct.

He knew the Importance of his own Writings to Mankind; and left he might, by a Roughness and Barbarity of Stile, too frequent among Men of great Learning, disappoint his own intentions, and make his Labours less useful, he did not neglect the Arts of Eloquence and Poetry: Thus was his Learning

He was not only skilled in the learned Languages, and the Tongues in which the Old Testament was written, but was able to converse in many of the modern Languages, and to read others, which he could not speak.

But

But his Knowledge, however uncommon, holds in his Character but the second Place ; his Virtue was yet much more uncommon than his Learning. He was an admirable Example of Temperance, Fortitude, Humility, and Devotion. His Piety and a religious Sense of a Dependence on God, was the Basis of all his Virtues, and the Principles of his whole Conduct. He was too sensible of his Weakness to ascribe any thing to himself, or to conceive that he could subdue Passion, or withstand Temptation by his own natural Power : He attributed every good Thought and every laudable Action to the Father of Goodness. Being once asked by a Friend who had often admired his Patience under great Provocations, whether he knew what it was to be angry, and by what Means he had so entirely suppressed that impetuous and ungovernable Passion ; he an: swered with the utmost Frankness and Sincerity, that he was naturally quick of Resentment; but that he had, by daily Prayer and Meditation, at length attained to this Mastery over himself.

As soon as he rose in the Morning, it was, throughout his whole Life, his daily Practice to retire for an Hour to private Prayer and Meditation : This, he often told his Friends, gave him Spirit and Vigour in the Business of the Day; and this he therefore recommended as the best Rule of Life; for nothing, he knew, could support the Soul in all Distresses, but a Confidence in the Supreme Being ; nor can a steady and rational Magnanimity flow from any other Source, than a Consciousness of the Divine Favour.

He asserted on all Occasions the Divine Authority and sacred Efficacy of the Holy Scriptures; and maintained that by them alone was taught the Way of Salvation, and that they only could give Peace of Mind.

The The Excellency of the Christian Religion was the frequent Subject of his Conversation. A strict Obedience to the Doctrine, and a diligent Imitation of the Example of our Blessed Saviour, he often declared to be the Foundation of true Tranquillity. He recommended to his Friends a careful Observation of the Precept of Moses concerning the love of God and Marl. He worshipped God as he is in himself, without attempting to inquire into his Nature. He desired only to think of God, what God has revealed of himself. There he stopped, left, by indulging

his own Ideas, he should form a Deity from his - own Imagination, and commit Sin by falling down

before him. To the Will of God he paid an absolute Submission, without endeavouring to discover the Reason of his Determinations; and this he accounted the first and most inviolable Duty of a'Chriftian. When he heard of a Criminal condemned to die, he used to think, and often to say, ' Who can • tell whether this Man is not better than I? Or, if

I am better, it is not to be ascribed to myself, but o to the Goodness of God.'

So far was this Man from being made impious by Philosophy, or vain by Knowledge, or by Virtue, that he ascribed all his Abilities to the Bounty, and all his Goodness to the Grace of God. May his Example extend its Influence to his Admirers and Followers! May those who study his Writings, imitate his Life ; and those who endeavour after his Knowledge, aspire likewise to his Piety!

He married, September 17, 1710, Mary Droleneveaux, the only Daughter of a Burgomaster of Leyden, by whom he had foanna Maria, who survives her Father, and three other Children who died in their Infancy.

The genuine Works of Boerhaave, according to his owu Catalogue of them, are as follows; and he declares, in 1732, that all others under his Name

are spurious, unless some few Prefaces to new Edi. tions of Books.

Oratio de commandando Studio Hippocratico, habita & impresa Lugd. Bat. 1701, apud Abraham Elzevir,

de ulu Ratiocinij Mechanici in Medicina, 1703, apud Joann. Verbessél.

qua repurgatæ Medicina facilis asseritur fimplicitar, 1703, apud Joan, Vanderlend.

- de coinparando certo in Physiiis, 1715, apud Petr. Vander Aa.

de Chymia suos Errores expurgante, 1918, apud Petr. Vander Aa.

de Vita Obitu clarissimi Bernardi Albini, 1721, apud eundem.

--- quam habui, quum honefia Misione impetrata, Botanicam & Chymicam Profesionem publicæ pone. rem, 1729, apud Ijaacum Severinum.

- de Honore Medici, Servitute, 1731, apud eundem.

Institutiones Medicæ in usus annue Exercitationis domesticos, anno 1708, apud 7. Vander-Lind. P. & F.

Qui dein auctior aliquoties reculus, in 8vo.. .

Aphorismi de cognoscendis & curandis Morbis, in ufum Do&trinæ domefticæ, 1709, apud . Vanderlinden.

Qui dein auctior aliquoties recufue, in 8ve.

Index Plantarum quæ in Horto Academico Lugduno Batavo reperiuntur, 1710, apud Cornelium Bonteftein, in 8vo.

Libellus de Materia Medica, & Remediorum Formu. lis, 1719, apud Ifaacum Severinum, in 8vo.

Qui iterum prodiit, in 8vo.

Index alter Plantarum, quæ in Horto Academico Lugduno Batavo aluntur, 1720, apud Petrum Vander Aa, in 4to.

Atrocis nec defcripti prius, Morbi Descriptio, fecundum Medicæ Artis Leges conscripta, 1724, apud Bontestein, in 8vo.

Atroc Atrocis rarissimique, Morbi Historia altera 1728, apud Sam. Luchtmans & Theod. Haak, 8vo. .

Tractatus Medicus de Lue Aphordisiaca, præfixus Aphrodisiaco 1728, apud 7. Am. Langerak 15 Fök. & Herm. Verbrck, in Folio.

Besides these he communicated to the Royal Society, and to the Royal Academy of Sciences, some Observations upon Quicksilver, which are published in the Philosophical Transactions,

Having given this Account of the Life and Writings of Boerhaave it remains, that I take some Notice of his capital Works, which are his Institutes, his Aphorisms, and his Chymistry.

His Institutes were designed as little more than a Syllabus to his Lectures. They are written in a very close and concise Style, but abound in Matter containing all the modern Discoveries in Anatomy, Physiology, and whatever relates to the Laws of the Animal Economy, and the Action of Medicines upon the Budy, with considerabie Improvements of his own, which are specified under their proper Articles. This Treatise is very methodical and distinct; but I apprehend it is utterly unintelligible to any one who is not in some Degree previously acquainted with the Subjects of which he treats.

His Aphorisms are, as he tells us himself, collected from the Greek medicinal Writers, the Arabians, and some few of the Moderns; and his Reasonings are founded on the Structure of the Parts and the Laws of Mechanicks. I must here observe, that Boerhaave to his great Honour, seems to have gone counter to most Writers of Institutes, and Compilers of Systems. For they have generally endeavoured to lead Nature captive, and to make her act conformable to their preconceived Notions, however crude and chimerical ; imposing Laws upon the animal Economy, which have no Reality, and establishing with great Praise and Industry, Sources of Action, which exist no where but in their own

Imaginations.

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