33 ° Of 
the following winter : The water in the two 
inverted glaffes rofe and fell as it was ei- 
ther affeded by the different weight of the 
Atmofphere, or by the dilatation and con- 
tradion of the air above a a. But the wa- 
ter in the veffel in which the Pepper-mint 
flood, rofe fo much above a a, and above 
the furface of the water in the other vef- 
fel, that one feventh part of that air muff 
have been reduced to a fixt ftate, either by 
being imbibed into the fubftance of the 
plant, or by the vapours which arofe from 
the plant. This was chiefly done in the 
two or three fummer months, for after that 
no more air was abforbed. The beginning 
of April in the following fpring, I took 
out the old mint, and put a frefh plant in 
its place, to try if it would abforb any 
more of the air, but it faded in \ or s days- 
Yet a frefh plant put into the other glafs 
whofe air had been confined for 9 months, 
lived near a month , almofl as long as an- 
other plant did in frefh confined air ; for I 
have found that a tender plant confined in 
this manner in April, would not live fo 
long as a ftrongcr grown plant put in, in 
June. 
The 
