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EXACT AND EARLY ACCOUNT
OF THE MOST
Published in the several Parts of
Floriferis ut apes in Saltibus omnia libant,
street, in the Strand,
b & Se
For No. XIX. 1732.
of Chemistry, as
both in publick and private
fion of our Lord Jesus Christ, and other
Reverend M. James Saurin, Minister
Practices, as have seduc'd the Vulgar,
ther le Brun, Priest of the Orat ory. 68
96 97 98
us. 39 afber ste Zer 53 pus ET,
a58 14 b.
bore docuit, in publicis, privatisque,
both in publick and private Lectures,
The Third and lasi Extract.
17 8 9 ).
• XV. of our Journal contains an Ac
count of the first part of this Work,
viz. The History of Chemistry ; and N° XVI. an Account of the second, or the Theory of the Art: We now proceed to the last or proper chemical Part thereof; viz. the Practice, Processes, or Operations.
This Part is delivered under five general Heads, or Sections; viz. (1) Prolegomena, or Introduction ; (2) Processes upon Vegetables ; (3) Processes upon Animals ; (4) Processes upon Minerals ; and (5) what the Author calls a Recapitulation.
THE Vol. 117.32.
No. XIX. 1732
The Introduction contains 13 Pages ; the Processes upon Vegetables 280 ; those upon Animals 87 ; those upon Minerals 148 ; and the Recapitulation 10. The Number of Proceffes upon Vegetables is 88 ; upon Animals 39; upon Minerals 100 : in all 227.
The Introduction complains of the confused Manner wherein the Processes of Chemistry have been generally treated ; and lays down Rules for introducing a Geometrical Method in delivering them; so that one Operation may continually lead to another, in the Order of Mathematicians; or, as the Author is pleased to express it, in the Hippocratical Mannera; and othing ever be repeated in vain. These Rules the Author professes he will carefully observe : but how far he has done it, or how far the Nature of the Thing will allow thereof, is a Point that deserves to be considered. The Affectation of a mathematical Procedure in physical Subjects, is apt to mislead; unless great Caution and Circumspection be used. And in this View, it might be ask'd whether the sixth, the eighth, the tenth, the twelfth, the sixteenth, Seventeenth, nineteenth, twenty second, twenty-fourth, twenty-sixth, twenty-leventb, twenty-eighth, thirtieth, thirty-first, fortyfirst, forty-fourth, forty-sixth, fifty-fourth, fiftysevenih, fifty-eighth, fifty-ninth, Sixtielb, Jixiyfirst, fixty-tbird, fixty-ninth, seventieth, seventyfirst, seventy-second, eightieth, eighty-tbird, eightyfourth and eighty - fixth Processes of the first eighty-eight upon Vegetables, to mention no more, ought not by the Author's own Rules and Laws of Method, to have been omitted, as fuperfluous, unnecessary and cumbersome,
& Lege Hippocraticâ, p. 2.
e n d Is
у n 2
in delivering the Elements of Chemistry, in a
He proceeds to shew the Reasons why he begins
A Chemical Operation he now again defines Chemical to be the Change of a Body, by means of the Che-Operation
defined. mical Instruments, to an End prescribed by the Laws of the Arti
He goes on to settle the Conditions, or Re- The Condiquisites, of the first Operation, in an elementary tions of the Course of Chemistry and lays down, that it forft Process shou'd be easy, simple, not attended with any great Change of the Subject ; and be rather a sem paration than an Alteration : so as to leave the Subje&t capable of being restored to itself, by a Reanion of its separated Parts.
IN 2 Oportebit enim primò follicitè cavere, ne frustra quid Keret in hisce: quid coim fupervacaneum magis, quam se. petere decies, per exempla novi Operis, quae una Operatione Patis demonstrantur? p. 2.
c See No. XVI. of our Journal, p. 349, Pag. 3, 4. See the firát Process hereafter.
Pag. 3. and 356.