236 ANIMAL REPRODUCTIONS. 
dually come into view, at firft obfcurely and con- 
fufedly, then fo diftin@ly and evident, that every 
one may recognife them as the bud of a flower. 
In this manner does the involution of the ex- 
panding parts become vifible in a real regenerat- 
ed head. 
This complete reproduction is very far from 
fucceeding in all fnails. ‘Two moft minute glo- 
bules often proceed from the trunk, in one of 
which are the rudiments of the fmaller horns: 
the other comprehends the rudiments of the lips, 
the mouth, tooth, and tongue. In procefs of 
time, thefe globules are united together, forming 
one only, and, by further unfolding, conftitute the 
half head. It is not unufual, that one of the 
two reproduced horns never attains the natu- 
ral length, or is diftorted, or that one lip is fmal- 
ler than the other, or even that the new head is 
quite inclined to one fide, or a hollow or con- 
traction between the new and the old, or, in 
fhort, that the head is not repaired at all ; and af- 
ter fix months, nay, after a whole year, the nak- 
ed trunk alone appears, when the fnail comes 
forth. "When the cut is perpendicular to the 
axis of the cone, I have almoft uniformly ob- 
ferved, that reproduction has perfect fuccefs, and 
that monftrofity and fuch anomalous produc- 
ions frequently happen when the cut is oblique, 
and 
