248 Analyfis of the Air. 
now changed from an elaftick, repulfive, 
to a ftrongly attra&ing ftate, may eafily be 
attraded thro 5 the thin partition of the vc« 
ficies, by the fulphureous particles which a- 
bound in the blood. 
And nature feems to make ufe of the like 
artifices in vegetables, where we find that 
air is freely drawn in 5 not only with the 
principal fund of nourifhment at the root* 
but alfo thro 5 feveral parts of the body of 
the vegetable above ground, which air was 
feen to afeend in an elaftick ftate moft freely 
and vifibly thro 5 the larger trachea of the 
Vine; and is thence doubtlefs carried with 
the fap into minuter veflels, where being 
intimately united with the fulphureous, fa- 
line and other particles, it forms the nutri- 
tive dudile matter, out of which all the 
parts of vegetables do grow. 
Experiment CXL 
It is plain from thefe effeds of the fumes 
bf burning Brimjione , lighted Candle, and 
the breath of Animals on the elafticity of 
the air, that its elafticity in the veficles of 
the lungs muft be continually dccreafing* 
by reafon of the vapours it is there loaded 
with I fo that thofe veficles would in a little 
time 
