Pharmacopoeia officinalis et extemporanea: or, a complete English dispensatory, in four parts. Containing I. The theory of pharmacy ... II. A description of the officinal simples ... III. The officinal compositions; being such of the London and Bates's [sic] dispensatory as are now in use ... IV. Extemporaneous prescriptions ... To which is added, an account of the common adulterations both of simples and compounds; with some marks to detect them by / By John Quincy.

  • Quincy, John, -1722.
Date:
1739
Catalogue details

Licence: Public Domain Mark

Credit: Pharmacopoeia officinalis et extemporanea: or, a complete English dispensatory, in four parts. Containing I. The theory of pharmacy ... II. A description of the officinal simples ... III. The officinal compositions; being such of the London and Bates's [sic] dispensatory as are now in use ... IV. Extemporaneous prescriptions ... To which is added, an account of the common adulterations both of simples and compounds; with some marks to detect them by / By John Quincy. Source: Wellcome Collection.

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    fpirituous, in the Senfe we have been fpeaking ;\ whereas in others, the dire& contrary Properties are. re- quir’d : In fuch cafes therefore, when by any adventitious Caufe thofe Me- dicines ferment, their Virtues are de- ftroy’d, and therefore’ they fhould never be admintfter’d; as feveral Elec- tuaries and Syrups, for inftance, which by Fermentation, frém too great an accidental Warmth, or too thin a Confiftence, lofe their intended Efii- cacies, and turn to a Tertium Quid, _ quite foreign to the original Purpofe of the Compofition: as will better appear from the following part of this Explication. There are feveral other Species of Fermentation; but whatelfe concerns us at prefent of this kind, may be beit taken from the fame Author, whom we have hitherto made our chief Guide in thefe Inquiries; who, to account for thofe more violent Com- motions which occur in the Chymi- cal Pharmacy, fuppofes the Particles which contribute thereunto to be elaftic. For Particles which are entirely elaftic, recede from one another, after they have met, with the fame Cele- rity they had before they mec. In Particles therefore of this kind, a new degtee of Motion will be ac- .quir’d after every Shock, and the _ Conflict will therefore be more vio- Jent ; fo that at length their Force or Moment will be fo great, as to break and deftroy the hardeft Bodies. And fince this Force of Elafticity is at- tended with that of Attradtion too, the Motion will increafe to a greater degree ; for the Impetus of a Particle, _ which is reflected againft another en- du’d with anattrattive Force, is con- tinually augmented by the Repercu/- fion. Particles thus agitated, endea- vour to drive out and exclude al] the Air which is contain’d in their _Pores;_and the 4ir being rarify’d by this Collifion, {0 that it cannot, upon + account of its Levity, keep» its for- mer place, carries up with it thofe Globules of Water which enclos’d it, to the Surface, and there forms Bzd- bles : which is well illuftrated by the following Experiment. If you put Filings of Steel, after you have pour’d Water and Oil of Vitriol upon them, into an 4ir- Pump, when the external Air is gradually exhauifting; all the Air contain’d within the'Pores of the Steel and Water, will burft out with {uch a Force, as not only to raife a prodigious Froth on the Sutface of the Liquor, but even to drive the Li- quor over the Brim of the Glafs. If this Motion incréafés. toa very high degree, it catifés an E fferve/cence and Heat; which confilts of nothing elfe but a more rapid Motion and mu- we may the better conceive this, let us examine how an Efferve/cence is produc’d, by mixing different Li- quors, as Water and- Oil of Vitriol. In this O7/ there is {uch an abundance of Sa/ts (as is evident from its Gravity ) that they feem to be placed. clofe to one another; and upon this account, becaufe the Attraétion is diffufed e- qually every way, they continue as it weré in an Eguilibrivin : but when the Water is poured upon it, the Con- tact of the Salts is taken away, and- the Attraction becomes unequal, Thefe Salts, according to their na- tural Propenfity, itrive to unite again 3 and fince by reafon of the Quantity of Matter they contain, they attract. one another more than they do Wa- ter, they difplace the Water, and force it out of their Interftices, till the Oi/ is diluted every where alike 5 and then the Fermentation ceafes. But if the Sa/ts are e/affic, whichis. very probable, fince there is fcarce . any Body entirely void of Elafticity s they will not only rufh upon one another with violence, but recoil af- ter the Shock, and move in a contrary Dire¢tion: from hence proceeds that C reciprocal