Analyfts of the Air. 1 5 j 
I fixed alfo in the fame manner young 
tender fibrous roots, with the fmall end 
upwards at n, and the veflel y y full of wa- 
ter 5 then upon pumping large drops of wa- 
ter followed each other faft, and fell into 
the ciftern which had Ho water in it. 
CHAP. VI. 
A fpecimen of an attempt to analyze the Air 
by a great variety of chymio-ftatical Ex- 
periments-, which fhew in how great a pro- 
portion Air is wrought into the compofi- 
tion of animaf vegetable^ and mineral 
SubftanceSy and withal how readily it re- 
fumes its former elajlick ftate, when in the 
dijfolution of thofe Subjlances it is diftn- 
gaged from them. 
H aving in the preceding chaptet 
produced many Experiments, to prove 
that the Air is freely infpired by Vegetables, 
not only at their roots, but alfo thro' fe- 
veral parts of their trunks and branches, which 
Air was moft vifibly feen afeending in great 
plenty thro* the fap of the Vine, in tubes 
which were affixed to them in the bleeding 
fcafon ; this put me upon making a more 
} parti- 
