370 ANIMAL REPRODUCTIONS. 
and left leg, at the fame time with gentle vibras 
tions of the whole body. It frequently darts 
fuddenly towards the furface of the water, and 
the next moment precipitates itfelf to the bottom ; 
and thefe manceuvres I have feen continued a- 
bove half an hour. But the fudden exertion, in . 
all its motions, indicated that the newt was im- 
patient at the tedioufnefs of the change. — 
When mott of the fpoil is thrown off, and the 
animal, to difengage itfelf from the reft, rapidly 
rifes to the furface, it feems carried along in a 
cloud; for the whitenefs, finenefs, and. femi- 
tranfparency of the fpoil, floating around it, 1s no: 
imperfect reprefentation of a cloud. 
I never obferved the fingers employed in de- 
taching the fpoil. Both young newts and thofe 
full grown caft feveral fucceflive fkins: fome 
of large fize are im my pofleflion, that have done 
fo before me. Reproducing limbs throw off the 
epidermis as well as the original. 
I have feen the fkin of the head, which formed 
like a collar or cravat round the neck, gradually 
come down the belly of a large newt that had 
loft the arms, and faften like a tight girdle. 
Nothing can accurately be faid of the number 
and interval of mutations. Between the 14 of 
july and the 7 of September, a newt has changed 
its {kin-eleven times.. 
1 change, 
