Anahfis of the Air. 233 
air in the glafs vcflel Sp, Nitro-acno^ 
p. 104. 
I placed on the pedeftal, under the inver- 
ted glafs z, z> a dy (Fig. 3 5-) a full grown 
Rat. At firft the water fubfidcd a little, 
which was occafioned by the rarifadion cf 
the air, caufed by the heat of the Animars 
body. But after a few minutes the water 
besan to rife, and continued rifing as lonft 
as the Rat lived, which was about 14 hours. 
The bulk of the Air in which the Rat 
lived fo many hours was 2024 cubick inches 3 
the quantity of elaftick air which was ab- 
forbed was 73 cubick inches, above pj part 
of the whole, nearly what was abforbed 
by a Candle in the fame veffcl, in Experi- 
ment 106. 
I placed at the fame time in the fuiie 
manner another almi^fl: half grown Rat 
under a veffel , whofe capacity above the 
furface of the water (Fig. 3 5.) was but 
594 cubick inches, in which it lived 10 
hoLirSi the quantity of elaftick Air which 
was abforbed, was equal to 45 cubick 
inches, viz. ^ of the whole air, 
which the Rat breathed in : A Cat of 3 
months old lived an hour in the fame re- 
ceiver, 
