8o i Treatise on 
Knight, brought it into Vogue again in France , 
under the Name of the Englijh Remedy. This Gen- 
tleman was no lefs bold in his Pradtice, than fuc- 
cefsful ; for he did not confine himfelf to Scruples 
and Drachms, but ventured upon it even to Ounces 
and Pounds ; always concealing, with the greatefl 
Care, the Medicine and the Method of preparing 
it. Hence he gained great Reputation both to 
himfelf and his Remedy : Whereupon Lewis XIV. 
purchafed the Secret of him for a large Sum of 
Money, and made it publick. 
In a chymical Analyfis , four Ounces and a Half 
of the Peruvian Bark reduced to a grofs Powder, 
yielded one Ounce, four Drachms and a Half of 
acid Phlegm ; the firft Portions of which were 
merely acid, but the laid were not only intenfely 
acid, but withal difcovered fome Marks of an al- 
kaline urinous Salt, as well by turning the blue 
Tin&ure of Turnfole red, as by making the So- 
lution of corrofive Sublimate foul and milky, and 
precipitating a white Powder to the Bottom of the 
Veffel. Afterwards came over into the Receiver 
one Drachm and fixty-eight Grains of thick Oil, 
fomething like Hog’s Lard. The Weight of the 
Rejiduum in the Retort was one Ounce, two Drachms 
and eight Grains ; which, after it had been cal- 
cined to Whitenefs, weighed one Drachm and fif- 
teen Grains : And from this, by a Lixiviation, was 
extracted half a Drachm of fixt Salt. Hence it 
appears that this Bark contains a large Quantity of 
acid Salt and thick Oil, and but very little uri- 
nous Salt and Earth. For it is to be obferved, that 
the Quantity of Oil which was contained in this 
Bark, mud: necefiarily be more than about two 
Drachms ; fince the Diminution of the Rejiduum 
in Calcination from one Ounce, two Drachms and 
eight Grains, to one Drachm and fifteen Grains, is 
chiefly 
