0 PT an eRe oe 
-356 “ANIMAL REPRODUCTIONS. 
eyes could be very diftin@ly feen in the left horn 
of a {nail that had begun to reproduce the mouth 
.and the two large horns, fic. 16,¢,¢c. The ante- 
rior part is here reprefented larger than life. 
During the whole courfe of the year 1778, 1 
continued to attend my fnails. The progrefs of — 
-reproduétion was very unequal as ufual: and 
none completely repaired the head. 
1 decapitated twenty-four {nails of the fame 
fpecies, 26 May 1780, and confined them in vel- 
fels after the operation. Several attained the 
fummit of the veffels, and attached themfelves to 
the fides, or to the paper covering over the 
‘mouth. The greater part fhut up the fhell with 
a very thin operculum at different degrees of 
depth within. | OUP 
Several of the decapitated {nails being immer- 
ged in water, that I might judge of the ftate of re- 
production, 9 September 1780: two exhibited a 
remarkable monttrefity. One had a fingle large 
-horn only, very like that of fig. 15. and was evi- 
dently formed by the union of two horns.’ Two 
dmall fhining black eyes were at the extremity : 
each provided with an optic nerve perfectly vifi- 
-ble through the tran{parent flefh. This monftrous 
-horn, which was about a line long, appeared 
thicker in proportion than that of fig. 15. It 
greatly refembled a fpindle, being cut even at the 
extremity, and all nearly of the fame thicknefs. 
But it was different from the other by a more im- 
. portant 
—— 
