4 6 flDf tije gtec^amtal flD?igtne 



lefs, but rather the greater: And 

 Oyl of Turpentine, which is a light- 

 er, and is lookt upon as a fubtiler li- 

 quor than water j though it be pour- 

 ed quite cold on Quick-lime , will 

 not 3 that I have obferved, grow fo 

 much as fenfibly hot with it. 



And now I have mentioned the In- 

 calefcence of Lime, which, though 

 an abvious Phenomenon 5 has exer- 

 cifed the wits of divers Philofophers 

 and Chymilts , I will adde two or 

 three Obfervations in order to an 

 Inquiry that may be fome other time 

 made into the genuine Caufes of it 5 

 which are not fo eafie to be found as 

 many learned mep may at firft fight 

 imagine. The acute Helmont indeed 

 and his followers have ingenioufly 

 enough attempted to derive the Heat 

 under confideration from the conflict 

 of fome Alcalizate and Acid falts, 

 that are to be found in Quick-lime, 

 and are diflblved, and fo fet at liber' 

 ty to fight with one another by the 

 water that (lakes the Lime. But 

 though we hive fomeiranifeft marks 



of 



