Of the Snail . >13 
the magnifiers, and will be found to be two Itemifpheri* 
cal eyes. And when the flump is re-extended, it will 
appear evidently hollow, or tubular to the naked eye. 
Snails partake of the nature of both fexes, infomuch 
that as foon as one has impregnated the other, the fame 
aft of generation is immediately returned ; each of them, 
eighteen days after thefe approaches, drop and conceal 
their eggs in the earth; the young of which, when 
hatched, appear with fliells compleatly formed s . 
If you would view the internal fabrick of this animal, 
the microfcope will, after a dextrous diffeftion, difcover to 
you the heart, juft againft a round hole near the neck, 
which probably is the place of refpiration; the heart may¬ 
be feen to beat near a quarter of an hour after diffec- 
tion. h Its guts are green (from the herbs it eats) and 
curioufly branched over with fine capillary white veins. 
This creature, how contemptible foever it may feem, 
hath a compleat fett of the fame parts and organs with 
other animals, as heart, liver, fpleen, ftomach, guts, veins 
and arteries. 
If the head be cut off, a little ftone will be found, 
faid to be of a diuretic quality, and of Angular fervice 
in gravelly diforders. 
They have a mouth like a hare or rabbit, and teeth as 
reprefented in fig. 175. whereof A B C fhew the upper 
jaw, which is white, and of a femicircular form j the 
lower black part C D E, hath feveral prominent parts or 
teeth F F F, but all fixed together fo as to compofe the 
fame bone. Mr. Hook obferved this very fnail (of which 
the figure now before us is a pifture of its teeth) to feed 
on the leaves of a rqfe-tree, and to bite out half-round 
bits of the fize and fhape of the letter C. 
I 
s Nat, Delin. p. 148. * Power’s Qbf. p. 38, 
If 
