[ 4 S° ] 
IV. The fourth experiment wus upon a toad. Jr v:?.9 
put into water julf deep enough not to cover its mouth, 
and the whole was put into the cold mixture, now be- 
tween io° and 15®. It allowed the water to freeze clofe 
to it, which as it were clofed it in; but the animal didr 
not die, and therefore was not frozen: however, it 
hardly ever recovered the ufe of its limbs. 
V. The fifth experiment was with a fnail, which froze 
very foon, in a cold between 10° and 13°; but this exj^e- 
riment was made in the winter, when the living powers 
of thofe animals are very weak : it might have refilled 
the cold more ftrongly in the fummer. 
To afcertain whether vegetables could be frozen, and' 
afterwards retain all their properties when thawed, or 
had the fame power of generating heat with animals, I 
made fever al experiments. Vegetable juices when 
fqiieezed out of a green plant, fuch as cabbage and Ipin- 
nage, froze in a cold about 29'’; and between 29^ and 
30° thawed again, which is about 4° above the point at 
which the animal juices freeze and thaw. 
I. I took a young growing bean, about three inches 
long in the ftalk, and put it into the leaden vefiel with 
common water, and then immerfed the whole into the 
cold mixture. The water very foon froze all round it; 
however, the bean itfelf took uj> a longer time in freez- 
ing than the fame quantity of veater would have done ; 
yet it did freeze, and was afterwards thawed, and jdanted 
in the ground, but it foon withered. The fame expe- 
3 rimeiit 
