E 130 3 
fweat, fo a quantity of air feems 
to iffue continually from the pores 
of our fkin. This is eafily to be 
obferved in a cold or warm bath,: 
in which we may clearly fee whole 
bubbles of this air rifing upon the 
fkin, and at laft rife to the top of 
the water. By plunging the hand 
and arm even in cold water, we 
may immediately obferve a large 
number of thofe bubbles every 
where: and they are the more ap- 
parent when the fkin is thoroughly 
dry before the part is plunged in- 
to the water; and much more fo 
when it is plunged precipitately in- 
"3 tecdt 
It is however to be obferved, that 
all the air contained in thofe bub- 
bles, which appear upon the {kin, 
when a part of our body thoroughly | 
dry is on a fudden plunged under 
the 
