V 



: 



• 





10 



HlJi 



,4. 



fane 



, rice 



f/7//: 



0/ the Atr. * 1 9 



A like "quantity of #^ of Iron, and 

 powdered jfe**** Qfi* ^d * 3 or 4 



days generate 7 cubick inches of air I could 

 not perceive any fenfible warmth in this 

 mixture, as was in the mixture of Iron and 



Brimftone. 

 T ordered Br imft one and Newcaftle Coal 



neither generated nor abforbed. 



Filings of Iron and Water abforbed 3 or 

 4 cubick inches of air, but they do not ab- 

 forb fo much when immerfed deep in wa- 

 ter ; what they abforb is ufually the firft 3 



or 4 days. 



Filings of Iron, and the above mentioned 

 Walton Tyrites in Exper. 70. abforbed in 4 

 days a quantity of air nearly equal to dou- 

 ble their bulk. 



Copper Oar, and compound Aqua-fort is, 

 neither generated nor abforbed air, but mix- 

 ed with water it abforbed air. 



A quarter of a cubick inch of Tin, and 

 double that quantity of compound Aqua- 

 fortis, generated two cubick inches of air 5 

 part of the Tin was diffolvcd into a very 



white fubftance. 









t 



Ex- 



■* 



