Iv. AND REVIVED. 157 
common among aquatic animals. Neither was 
it by a foetus, but I had reafon to think it was by 
means of eggs. When the animals had been 
fome days revived, an ovular fubftance was feen 
in the body of the largeft, Pl. 3. fig. 5. N: and 
when I happened to find them dead, they always 
had this ovular fubftance. But it had in general 
pafled from their bodies into the glafs without the 
means being known: at the fame time with an 
important fingularity : when entire, the ifolated 
animal fwam alone in the fluid; but when the 
fubftance was broken, another wheel animal much 
fmaller fwam along with it. This made me fuf- 
pect, that the new inhabitant had come from the 
ovular fubftance, which, as other eggs, was broken 
for exclufion of the animalcule. One might 
fufpeét, that it alfo was carried thither by the 
air ; however, to afcertain the fa&, it was necef. 
fary to fee the wheeler iflue from the ovular fub- 
ftance, which, notwithftanding all my gare and 
attention, I could never accomplifh. 
Baker’s obferyations agree with mine, though 
he has not been more fortunate. He thinks 
wheel animals are oviparous, becaufe he has of- 
. ten obferved a confiderable number of gelatinous 
eggs of proportional fize in the water along with 
them. He has alfo obferved in a {pecies of 
wheel animals, a little larger than the moft com- 
mon kind, an elliptic body, the figure of which 
yery 
