I 
218 Of the Snail. 
and the young-ones come out, when hatch¬ 
ed, with Shells completely formed, and of a 
Minutenefs proportionable to their own Size. 
Thefe little Shells enlarge, as the Snails ad¬ 
vance in Growth, by the Addition of new 
Circles, of which Circles they always conti¬ 
nue to be the Center. 
Cutting off a Snail's Head, a little Stone 
appears, * which from its diuretic Quality 
is of lingular Service in gravelly Diforders. 
Immediately under this Stone the beating 
Heart is feen, with its Auricles, which are 
membranous ; all of a white Colour, as are 
alfo theVelfels iffuing therefrom. This lit¬ 
tle Stone feems intended to ferve inftead of a 
Bread;-Bone, which mod: other Creatures 
have. 
It is very remarkable, that Snails difcharge 
their Excrements at an Opening in the 
Neck, that they breathe there, and that both 
their Male and Female Parts of Generation 
v 
are dtuated near the fame Place. The Male 
Part is very long, and in Shape refembles the 
Penis of a Whale. 
* Vtd. Swam me rd, Hijl. Generate des Infettes, p. 77. 
CHAP. 
