tetas TOR Y of 1 NSE GT s. é 
or flimy humour. If this membrane be again 
{welled up from its aperture for air, it will be 
obferved to expand itfelf very beautifully againit 
the fhell. ‘This cavity in the right fide of the 
body reaches to the turn of the inteftines, but 
in the left fide, where the heart is fituated, it 
goes according to the windings of the liver, 
and follows the turnings of the latter, unto the 
third and fecond convolutions of the inteftines 
in the body. 
In this arch of the Snail’s verge, near to the 
heart and its auricle, there is feen, Tab. V. 
fig. 1v. é, a certain oblong, triangular little 
part, to which the heart c is fixed and united, 
there being nothing between them but the 
pericardium. But on the outfide it {wells, 
Tab. IV. fig. 1. ~, through the fkin; and is 
very vifible in a boiled Snail, when taken out 
of its fhell, fig. 1v. 0. This latter likewife fhews 
the figure of the body at that time, that is, 
the convolutions p of the liver, and after what 
manner the verge contracts itfelfg. The colour 
of this little part is like that of grey afhes mixed 
with water. On the hinder part it is connected, 
Tab. V. fig. v. 4 very ftrongly with a certain 
part of the inteftines: and liver ; but that part 
of it which is feen through the outmoft mem- 
Cor A 
re. 
brane which covers the body, is obferved to 
be interwoven with many veffels. On the 
other fide, its colour is more waterifh m than 
where it is of an afhiy-grey, and connected to 
the pericardium &, . 
I firft thought that little part was the {pleen, 
but when I viewed it more accurately, I ob- 
ferved that it difcharged itfelf into a pretty 
large duct, which runs near the inteftinum 
rectum, or ftraight gut, fig. iv. f, and in my 
opinion opens into it. I therefore now believe 
this part to be a glandular little body, or a 
facculus or bag, whereby the calcarious mat= 
ter of the blood is drained from the body, and 
depofited in the inteftinum rectum, of ftraight 
gut; and accordingly we find that fuch a 
matter is there fometimes mixed with the ex- 
crements. If this little part be diffected, and 
put into water, it exhibits a glandular fub- 
{tance ; but as it abounds with a grey calca- 
rious humour, it makes the water miuddy. 
On the fide oppofite to the inteftine it appears 
fomewhat bright, and feems to confift of a 
glafly fubftance ; it has the fame afpect in feve- 
ral places; alfo in the middle, where it feems 
divided into little grains, which are vifible un- 
derneath : it taftes like afhes. 
pee Ville 
Of che rites biles fiomach, inteftines, and falival vefféls of the Sriail. 
HE liver, which for the moft part lies 
in the hinder portion of the ‘hell, 
forms a {piral convolution there with the in- 
teftines, Tab.-V. fig. vi.@; as may be feen 
on the outfide, Tab IV. fig. 1. 2 It is fur- 
ther divided into divers lobes, Tab. V. fig. vi. 
bbb, according to the different courfe of the 
inteftines, which make as many divifions in 
it, as they have turnings and windings. Be- 
fides thefe, the liver is very full of greater and 
{mailer veffels, which are difperfed through 
every part of it, fig. tx.a. It has likewife 
its particular thoracic or chyliferous duéts, fig. 
vit. 4, which difcharge themfelves into the 
inteftines, without any intermediate gall-blad- 
der; in the fame manner asin Horfes, Pigeons, 
and other animals, which are {aid, though 
without any foundation, to have no bile. I 
could perceive no remarkable bitternefs in the 
bile of the Snail: 
The liver itfelf feems to confit of {mall 
equi-diftant little grains, called glands by the 
great anatomift Malpighius; to whofe judg- 
ment we ought to give great credit, fince one 
can f{carce find his equal in anatomical know- 
ledge. The liver is of a dark brown colour, 
a little approachirig to green: the hardnefs 
and fubftance of it, are like thofe of the fpleen 
inaman. It abounds with a juice or humour 
of a yellowifh green colour. In the upper 
part, where the liver turns round, its outward 
coat, which is covered with little whitith 
points, grows greener. It has very few lobes 
on the infide. Nothing is more favoury in a 
boiled Snail than the liver, which, I think, 
is alfo very eafy of degeftion: whereas, on thé 
contrary, all its mufcles are hard and tougn, 
except the fpermatic vefléls, which are like- 
wife very pleafant eating. 
The Snail’s ftomach, fig. vi. ¢, is placed 
in the cavity of the neck and belly, and con- 
fifts, as in man, of three coats, notwithftanding 
its being very tender and thin: it is alfo pro- 
vided with veins and arteries. It is of a white 
tranfparent colour like parchment; but when 
diftended with food or air, it has the colour of 
the moft tranfparént membrane: when empty, 
it appears full of oblong grooves, Tab. V. fig. 
Iv. 2, which exhibit an agreable fight ; for they 
are fo many contra¢ted mufcles, which cor- 
fugate the coat in thismanner. ‘The ftomach 
grows narrow by degrees, fig. VI. d, and 
forms by that contraction its lower orifice, 
called the Pylorus. After this follows the 
{mall gut 44d, between which the liver is prin- 
cipally fituated. After thefe inteftines haye 
turned themfelves two or three times, then 
they form the inteftinum reGQum, or {traight 
gut ¢, which opens, with its foranien, into the 
Snail’s verge f About the fpiral convolution 
of the body is obferved g a place, where the 
bile difcharges itfelf into the beginning of the 
inteftines ; which appears more evidently, if 
thofe biliary ducts are fomewhat {eparated, 
fig. 
