I 64 MifceUanea, Curiofa. 



cannot deny but that an Acid, and a Solu- 

 tion of Salt of Tartar, did diitolve fbme part 

 of the FleuYmeat, which I mix'd them with, 

 but yet neither fo (bon, nor fb perfectly as the 

 two forementioned Oils. And I do the ra- 

 ther think one of thofe Juices, which confti- 

 tute the Saliva, to be of the Nature of Oil of 

 Turpentine, than of a hYd Salt, becaule it 

 will correct and temper even Oil of Vitriol, 

 fb as to render it more tolerable to the Fibres 

 of the Stomach. Not that I fuppofe the acid 

 part of the Saliva to come near to the Acidity 

 of Oil of Vitriol. For though, when they are 

 mix'd, they will make a Liquor that may not 

 be injurious to the Stomach ; yet the acid Juice, 

 if it were fb corrofive as Oil of Vitriol, would 

 certainly be injurious and painful to the Saliva- 

 tory Ducts, which convey it to the Mouth 

 before it is mix'd with the oleaginous Liquor. 

 But I only fay it is an Acid, and in fbme de- 

 gree approaches to the Nature of that Oil. 

 And Nature, which can much better adapt fe* 

 veral Caules for the Production of fuch an Ef- 

 fect than Art, may attain her End by a more 

 temperate Acid ; though, at the fame iime, we 

 may be able to make fome probable and true 

 Conjectures about the Nature of thofe Caufes 

 from Experiments. 



It being molt reafonabJe to fuppofe, that 

 there are but two forts of Juices, of a different 

 Quality, that make the Saliva, I do conceive, 

 that four of the eight Salivatory Glands, or 

 two Pair of the four, do fupply one of thefe 

 Juices, and the other four Glands the other. 

 And this feems to be a very good Reafon, why 

 they are fb planted, and the Orifice of their 



Ducts 



