have leifure to extend further the anatomy o f infecls y for it is
only by a comparifon o f their’s with that of man, that we can ever
afcertain their true place in the fcale o f creation. I f this comparifon
could be accurately difcovered, the true philofopher
would be able to trace their final caufe, or rather the originating
fource of their exillence, and point out the degree in which they
accorded with thofe laws of goodnefs and truth, by which the
univerfe and all it’s parts are regulated and governed.
The head, as reprefented in thefe figures, is magnified about
three hundred and forty-three times; it is feparated from the
neck, and difengaged from the fat. The figures here under con-
fideration reprefent the head in the third and fourth Hate o f examination,
when a great many parts had been removed, in order
to difcover thofe that are here feen.
H H, the two palpi. The truncated mufcles D belong to the
lower lip, and form a part o f it’s moving mufcles. K is the two
ganglions o f the neck united. 11, the two filk veflels. L , the
oefophagus. M, the two diffolving velfels.
Ft 3 J 1 are the continuation o f four cephalic arteries. Fig. 5,
S S, T T , V V, and Z, are the ten abduCtor mufcles of the jaw.
Fig. 6, under e e and f f, are feen four occipital mufcles. a k, a
nerve of the firft pair belonging to the ganglion of the neck ; b,
a branch o f this nerve.
Fig.
Fig . 7, P l a t e XII.
Is an outline of the head, magnified confiderably more than in
the laft figures, exhibiting the nerves as feen from the under-part.
Excepting in two or three nerves (and thefe maybe eafily known,
becaufe each nerve of the fame pair is marked with a fimilar
letter), only one nerve of each pair is drawn, as a greater number
would have occafioned much confufion.
The nerves o f the firft ganglion of the neck are defigned by
capital letters.
The nerves of the ganglion a of the head are diftinguilhed by
Roman letters.
The nerves of the fmall ganglion by Greek characters.
Thofe of the frontal ganglion, except one, by numbers.
A GENERAL IDEA OF THE, INTERIOR P A R T S OF THE
C a t e r p i l l a r .
Having defcribed fo many of the parts as to evince the amazing
wonders that are difplayed in this infeft, I proceed to give a
more particular account of the nature of fome of thole parts.
O f
i n