1 6 1 JnaJyJis of the dk. 

 CHAP. VI 



A Specimen of an attempt to analyfe the Air 

 by a great variety of chymio-ftatical Ex- 

 periments, which Jhew in how great a 

 proportion Air is wrought into the com- 

 poftion of animal, vegetable, and mineral 

 Sub fiances, and withal how readily it re- 

 fumes its former elafick fate, when in the 

 difjolution of thofe Subfances it is dij engaged 

 from them. 



HAving in the preceding chapter pro- 

 duced many Experiments, to prove 

 that the Air is freely infpired by vegetables, 

 not only at their roots, but alfo thro' feveral 

 parts of their trunks and branches, which 

 Air was moil vifibly feen afcending in great 

 plenty thro' the fap of the Vine, in tubes 

 which were affixed to them in the bleeding 

 feafon -, this put me upon making a more 

 particular inquiry into the nature of a fluid, 

 which is fo abfolutely neceffary for the fup- 

 port of the life and growth of Animals and 

 Vegetables. 



The excellent Mr. Boyle made many Ex- 

 periments on the Air, and among other dis- 

 coveries, 





