“TH. CONFINED. .IN STAGNANT AIR. 87 
ein- 
firft, ,and the frogs diftributed in the fame man- 
ner: fo that there was no difference between 
this and the preceding ;experiment, except that 
there was no water in the veflels ; and here there 
were four ounces in each. In two days, none of 
the frogs were alive in the veflel with eight ; in 
that with four, they lived three days and a_half, 
_and five days where two were. During thefe expe- 
riments, the thermometer {tood between 63° and 
JO. 
Both experiments were repeated, the circum- 
tances in every refpect the fame, except that the 
cheat-of the weather was greater; and then the 
thermometer afcended: to 77°. The frogs in the 
firft veffel died in twenty hours; in the fecond, 
in nineteen.; and the two frogs in the third, in 
about two days. As to the fecond experiment 
with veflels containing about four ounces of wa- 
ter ; the eight frogs-died in thirty-two hours, the 
four in two days, and the two in the third veffel, 
in. three days and a: half. 
‘The experiments were: repeated feveral times ; 
but, to avoid the tedium of dry details, I fhall 
not circumftantially defcribe them, and will only 
{peak of the refults obtained from veflels without 
ywater. Sometimes I obferved the irregularities 
which have already been remarked. It fome- 
times happened, that more frogs perifhed in the 
fame time,.and_fometimes later than.a fmaller 
¥ 4 -number. 
