Chap.LL Of Wounds. 197 



pathetick Powder, is by calcining Roman Vitriol in the 



Sun ; but the following Method is much more preferable 



and only requires a little more Pains. 



" Take any Quantity of £;7^//y7^ Vitriol, ^. 

 '' fuch as goes under the Name of Bow f/jl pl"^^^J^'' 

 " Copperasy diflblve it in Water, and filter 

 " it thro' brown Paper, fet it into a cool place to fhoot 

 *' into Cryltals, diflblve the Cryftals in the fame Manner, 

 ^' and let it pafs thro' the Paper as directed, repeating the 

 '' Operation until the Cryftals are tranfparent and pure. 

 *' Set thofe Cryftals in a clean Pan in the Sun, either in 

 '' June^ Jtdy,ox' Jugufty fo long till they are calcin'd to 

 " Whitenefs ; when one fide is calcin'd, turn the other, and 

 '' in a few Days the Cryftals will crumble into Powder ; 

 *' if they do not, they may be again beat and expos'd to the 

 " Sun, and ftirr'd three or four times every day ; at laft 

 " beat them into a very fine Powder, and again fet them in 

 " the Sun, ftirring as before tor two or three Days more, 

 " in which time they will be very white, then take in the 

 " Matter while the Sun fhines hot upon it, and keep it 

 '* from the Air in Glafles well ftopt, and in a dry Place. 

 - This is the Method of preparing the Sympathetick Pow- 

 der ^ as it is inferted in Dr. ^linc/s Difpenlatory ; to which 

 I fliall fubjoin another out ot the fame, that bears the Title of 

 a Reftringent Preparation of Iron, fold by the Name of 

 Colehatch\ Styptick Powder^ and is as follows. 



" Take any quantity of Filings of Iron, Another Styp- 

 " andpourupon them Spirit of Salt, to the tickPo^ixder. 

 '' Height of three or four Fingers above them. Let them 

 '* Hand in a gentle Digeftion till the Fermentation is over, 

 *' and the Spirit of Salt is become fwect, then pour off what 

 *' is liquid, and evaporate it in an Iron or glafs Veilel until 

 " half is confum'd, at which Time put to it an equal Quau- 

 " tity oi Sacchanan Saturni^ and evaporate to a dry Pow- 

 " der ; if upon iisfirft coming dry the Operation be ftopt, 

 *' it has exadly the Appearance of Colebatch's Powder ; 

 *■ but if it be continued longer, and the Heat raifed, it will 

 *' turn red. It muft be kept clofe ftopt from Air. 



This Styptick may not only be eafily made, but is the more 

 for our Purpofe, as the Doftor has made an Experiment of its 

 Efficacy upon a Horfe ; his Words are thefe concerning it. 

 " If this is not kept clofe ftopt, it will imbibe the Air, 

 *' and flow fo as to lofe its Efficacy. I have been inform/d 

 " by very good Hands, that this is the Styptick with which 

 " there was fo much Noife made fame time ago by the 

 X 3 '' Author 



