and P^itJUtfton Of ftolatfltty* 5 * 

 latile than the Phlegm, and of a ve- 

 ry piercing taft ; which way of ob- 

 taining a Spirit without any violence 

 of fire, and without either previ- 

 ously abftrafting the Phlegm., (as we 

 are fain to do in frefb Urine) or te- 

 dioufly waiting for the fermentation 

 of ftale Urine, I taught fome Chy- 

 mifts , becaufe of the ufefulnefs of 

 Spirit of Urine; which being obtain- 

 ed this innocent way, would proba- 

 bly be employed with much lefs fu- 

 fpicion of corrofivenefs y than if in 

 the operation I had made ufe of 

 Quick-lime, Another Illuftration of 

 what I was not long fince faying, may- 

 be fetch'd from the Experiment of 

 making Spirit of Nitre by mixing 

 Salt-peter with Oil of Vitriol, and 

 diftilling them together : For the 

 Oil does fo divide or break the cor- 

 pufcles of the Nitre, that the now- 

 difpofed particles of that Salt, which 

 amount to a great portion of the 

 whole, will be made eafily enough 

 to afcend even with a moderate fire 

 of Sand., and fometimes without any 

 D 2 fire 



