no ea 
Z : 
i eaerehss: (POOR Y of To N&GEE’C <i 7S. Of 
_ further from thence towards the fpiral turnings 
of the Snail’s body, being there probably of ufe 
to provide for feveral other parts. 
We further obferve two nerves dd arifing 
from the brain, which are diftributed into the 
feveral parts of the jaws, mouth and palate, 
and probably ferve for divers ufes. But the 
optic nerves 77 which have the eyes placed in 
their extremities, fwelled out in form of little 
globes, are extremely beautiful. Behind thefe 
are difcovered two other nerves £2, which reach, 
each with three ramifications, to the fore parts 
of the skin, and to the bafes or roots of the 
upper horns ; and afterwards alfo give two little 
nerves // to the lower horns, which are of the 
fame ftructure with the nerves of the upper, 
and are alike terminated with globular ends. 
Beyond thefe a pair of very tender nerves, 
Tab. VI. fig. 1. mm, {pring from the brain, each 
_of which being divided into two branches, 
runs to the mufcles of the {kin of the head, 
and is inferted in each fide of the Snail’s lower 
horns. Laftly, two larger nerves nm, are dif- 
covered, which run under the parts of the 
mouth, jaws and palate, and diftribute them- 
felves over thofe parts, and are defigned pro- 
bably for motion or tafting, or for both. 
Again, fome of the nerves which {pring 
from the {welling or production of the {fpinal 
marrow, are inferted in miufcles, fituated in 
each fide of the neck 00, to which they give 
motion. Others, on the contrary, are fent 
away to the fpermatic veffels , and to the coat 
and mufcles g, which cover and move them. 
Some nerves alfo iffue rr from thofe {wellings, 
which are diftributed in the mufcular parts that 
move the fides of the body. Above, on the 
right fide of this little knot, there arifes an ob- 
long little nerve, which is defended by a like 
mufcle, and reaches to the uteruss. This 
mufcle may probably alfo ferve to move the 
fpinal nerves on the infide. Behind the for- 
Ge Ete 
mer are two other oblong nerves, one of which 
bends back under the little nerve of the uterus; 
but the other, being again divided into two 
branches, is inferted in the verge of the body ¢; 
at the upper part of which are {till feen fome 
mufcular fibres, which iffue from the tranfver- 
fal mufcle of the abdomen, which is fituated 
within, under the arch of the membrane of the 
verge. On the other, or left fide, a like nerve 
is obferved alfov, which has the fame infer- 
tion, and ferves for the fame ufe, that is, to 
to give fenfe and motion to thofe parts. In 
the left fide we are likewife to obferve, what 
manifold and {trong nerves are tranfmitted to 
all the middle and lower parts of the body. 
We will firft examine thofe in the middle. 
Some nerves are there inferted, Tab.VI. fig. 1.x, 
between the tendons fig. 11. 2m of that ftrong 
mufcle, which moves the middle of the body, 
and thofe are fent away to the feveral mufcles 
that run near it. A confiderable number 
of little nerves befides yyy are obferved, fome 
of which are long, others fhorter, and fome 
are divided into two, others into three lateral 
branches : thefe defcend to the lower verge or 
foot of the body, in order to give it the power 
of feeling and moving. I have exhibited none 
of thefe nerves in the right fide, to prevent 
confufion z. 
Here we fhall conclude the prefent chapter. 
Now, reader, judge whether God has not fhewn 
himfelf as magnificent and aftonifhing in the 
the texture of the brain and nerves of the Snail, 
as in the formation of the fimilar parts of 
man; excepting only the mind and principle: 
or feat of the underftunding. As thofe do not 
appear to the diffecting knife, fo they are lefs 
proper to come into our analogy or comparifon; 
for thofe only obferve and inveftigate corpo- 
real and fpiritual things, and thence defcend to 
the deepeft aby{s of the wifdom and {ecrets of 
God. 
betes 
Of the mufcles of the body and fhell, which is the bones of the Snails: in 
what a wonderful manner this hell is formed on the infide, and how it is 
increafed and nourifoed. Laftl 1, how the Snail moves in its egg. 
HOSE who have feen diffections, or 
have any knowledge of anatomy, know, 
that the hiftory of the mufcles cannot be ac- 
curately underitood, before the bones in which 
they are inferted are firft known. For the 
latter are fixed points, towards which every 
thing in the body, that has a ftrong motion, is 
drawn and moved. And though the naked 
Snails have properly no bones, yet they have a 
certain extremity, wherein mufcles are inferted; 
as I fhall thew in its proper place. 
That wife architect, who alone framed and 
reduced all things into order, has likewife efta- 
blifhed different rules in the compofition of 
animals, by the affiftance of which he has pur- 
fued the fame ends and purpofes, how greatly 
foever the ways and means to arrive at thofe 
ends differ in various inftances. In fome ani- 
mals the bones are found placed in the body, 
with flefh fpread about and affixed to them, as 
in a man, quadrupedes, and in fome birds. In 
others, we can only find cartilages, wherein 
mufcles are inferted, as in the Ray-fith and 
fome others. The Cuttle-fifh has only one 
bone in its body, except the nofe or fhout. In 
fome, which are fo {mall that they have no 
confiderable bones, the mufcles are inferted in 
the skin itfelf, or they meet together in certain 
R 
callous 
