F231 -j 
the furface of the water, is not 
fuch as really iffues out of the 
pores; for, as our fkin is always 
covered with fome unctuous matter 
which feems to repel water, the 
fudden immerfion does not allow 
the water to chace before it all the 
air fticking, as it were, to the fkin, 
but a good deal of it is left upon 
it, and forms partly thefe large 
bubbles. This feems to be the 
more probable, as particularly thofe 
places to which thefe bubbles ad- 
here are found quite dry, if ob- 
ferved attentively, when the part is 
withdrawn out of the water. But 
thefe very bubbles are in all proba- 
_ bility alfo partly owing to air oozing 
out of the fkin; for, if they were 
nothing but atmofpheric air, they 
would not increafe in fize in cold 
Ber, but become fmaller by con- 
2 denfation : 
*- 
