to communicate diem to his Friends, and to allow them to dif^^ 
pofe thereof, upon a hope, that equirabfc Readers will be ready; 
to excufe^if hereafter they fliould appear alfo in the Treatifes' 
they belon|5 to, fln^e he confents to cHis Anticipation, but to 
comply with thofe,that think the imparting of real and pradi- 
cal Experiments, may do the Publickfome Service, byexcite- 
ing and affifting mens Curiofity in the interim. 
As for the Experiment, you fa w. the other day at my Lodg- 
ings, though it belongs to- fome Papers about CM, that ( you 
Know) could not be Publifli'r^.when the reft of the H?/?or^ came, 
forth, and therefor^ was referved for the next Edition of that 
Book ^ yet the Weather having been of lace very hot, and 
threatning to continue fo, I prefiime, that to give you herein 
compliance with yout Curiofity an Account of the Main and 
Pxadical part of the Experiment, may enable you to gratify 
not onely the Curious among your Friends,but thofeof the 
Delicate^ that are content topurchafe a Goolnefs of Drinks 
at a fomewhat changeable rate. 
Youmay remember, that the. Spring before the. laft, I (hew'd 
you.a particular Account of a way^ wherein by a certain ,fub* 
fiance obtained fxom Sal Armoniat]^ I could prefently produce- 
ar confiderable degree of^^^W^and that with oddCircumftances^ 
without the help of SnoWy Ice, Niter 3cc, But that Experiment 
being difficult and coftly CHOugh^ and defign'd to afford men 
Information, not Accommodations, I afterwards tryed, wha? 
fome more cheap and facile mixtures of likely Bodies with Sal 
4rmomac\\vo\AAdo towards the Produdion of Cold, an d af- 
terwards I began to confider, whether to that purpofe alone 
( for my firft experiment was defign'd to exhibite other f hrno- 
me7m too ) thofe mixtures might not without inconvenience be 
omitted: and Iwas much confirm'd in my conje^ure, by an 
accident , which was cafually related to me by a very Ingenious 
Phyfician of my acquaintance, but not to be repeated to you 
m few words, though he complain d, he knew not what to make 
of/r. 
Among the feveral ways, by which I have made infrigidating- 
Mixtures with Sd Armomac\y themoft fimple and facile is this: 
Take one pound of powder'd Sal Armeni^e^ and about three 
Pints (or pounds) of Water, put the Salt into the Liquor, ei^ 
altogether^ if your defign be to produce an intenfe^though 
