Te Bret ORY & IN Oec ws. 6% 
In order to place thefe truths the more evi- 
dently before our eyes, we muft very cautioufly 
draw the Worm out of its fkin, at the time when 
it begins to harden or grow ftiff; for, fince this 
Worm is not yet in reality become a Nymph, 
but has all its parts difpofed in a different man- 
ner than in the Nymph; we may fee each of 
them in its place, and where they are refpectively 
fituated in this ftate inthe head and tail. ‘Thus 
I exhibit, Tab. XLI. Fig. 111. aa, the antenne 
or horns, the head, 4, which I have delineated 
fomewhat too large; under the latter is feen the 
probofcis or trunk, and on each fide the firft 
pait of legs, cc; beneath thefe appear the wings, 
dd, and then the fecond, ee, and third pair ff of 
legs. ‘Then follows the abdomen, g, with its’ 
tings, and then the tail, 4. In the abdomen are 
very diftinétly feen tranfparent particles of fat ; 
and in the tail, the pulmonary tubes come in 
view, difplaying, or rolling out themfelves, 77. 
It further appears how even the inteftines, &, caft 
a fkin; for they remain fixed to the orifice of 
the fundament, which opens in the utmoft part, 
and is here cut off from the feparated fkin, 7; 
for the Worm does not difcharge its excrements 
through the extremity of the tail, but fomewhat 
higher, where we may likewife fee the funda- 
ment. 
What I have hitherto advanced, may be feen 
more evidently in the Nymph; in which thefe 
parts are difpofed in their natural order, and ranged 
beautifully and artificially among themfelves. 
Here then occur the antennz, Fig. iv. aa, with 
their joints: the eyes, 66, which are now ar- 
rived at their full fize: the probofcis, c, and 
its appendages, fituated under the eyes on the 
breaft: the firft pair of legs beautifully folded, 
dd behind thefe are likewife feen another pair, 
ee: under the latter, again appear the wings, 
and their artificial convolutions and_ beautiful 
foldings, ff. The body likewife exhibits its an- 
nular divifions to view, g. Under the fecond 
air of legs, the third pair likewife exhibits 
itfelf, b. Thofe black fpots alfo that are feen on 
the body, and which we fhew to be fituated in 
CHA 
the Worm, above or over the points; the pul- 
monary pipes, are here likewile very diftinct 77. 
But near them are alfo prefented to our view four 
apertures of the pulmonary tubes, A&R, and 
alfo the annular inflexions of the body, with 
fome {mall prominences, there ftanding above 
the furface of the body, which have alfo caft 
their fkin. The claws are tranfparent in the 
extremities of the feet; and make a beautiful 
figure, when the Nymph, being fome days old, 
has loft the greateft part of the fuperfluous hu- 
mours by evaporation, and in the integuments or 
covers of the membrane, wherein it is invefted, 
and in its outmoft {kin in which it is involved, 
like a tender birth newly brought to light, be- 
comes by degrees ftronger and more firm; fo 
that at length it is able to creep abroad, and 
break open and caft off both its coats at the fame 
time: that is, this Nymph is covered with two 
integuments ; whereof the interior is a thin mem- 
brane, which very clofely invefts the Nymph: 
the other, or exterior, is conftituted by the out- 
moft hard fkin, within which the little infe@ 
has performed its change in an invifible manner. 
-This is the {kin which makes this infeé look like 
a Worm at this time; and it is this fame fkin 
which made me give this order of changes, the 
name of a Vermiform-Nymph. | 
Whoever therefore defires to have a thorough 
knowledge of thefe creatures, muft treat them ia 
all thefe ways. Ihave obferved, that in thofe 
Worths, which I had newly drawn out of the 
ikin, one might diftinguifh plainly the mouth 
and the points of refpiration ; even inore clearly 
than inthe Worm that is ftill, creeping, fwim- 
ming, and is no way changed, Indeed, had I 
not refolved to be fuccinét in this place, I fhould 
defcribe what has been hitherto faid much moré 
at large, and thould have delineated all the parts, 
and at the fame fhewn their fituation in the 
Worm; as alfo what pellucid little parts are ob- 
fervable therein, what their ftruGture is, their 
motion, how the pulmonary tubes are inferted, 
and much more; but I arn obliged to be {para 
ing of my leifure hours, 
Pay), 
The anatomy of the Nymph, the fat, the pulmonary tubes, the fromach and ia- 
teflines: the wonderful changes observable in the ovary, mu/cles, Jpinal marrow, 
and other internal parts which infenfibly come in fight. 
oie HE Nymph I exaniined being freth ftript 
of its integuments, was of a bright green 
colour, with white tranfparent, and fome greenith 
particles of fat: and indeed it made a beautiful 
appearance; efpecially as the pulmonary tubes 
were at the fame time obferved to glitter like 
_ pearls. The head, the legs and wings were foft 
and fluid like water, and when but very lightly 
touched, they immediately difcharged an aqueous 
humour. The pulmonary tubes had become 
confiderably fmaller, narrower. and more con- 
tracted. From the tail unto the place, next be- 
low the wings, I counted feven apertures of the 
5 
lungs; all which, as well as the rihgs of thé 
body being clofely gathered up above eaeh other, 
differed very much from the points of refpiras 
tion inthe Wormn ; fo that therefore the Nymph 
was now only one third as big as the Worm had 
appeared to be before. 
If this Nymph be laid on its belly, the heart 
is immediately feen beating in its back, without 
any previous diffection: this indeed appears very 
farély fo after the incifion of the skin; becaufé 
the heart then, by reafon of the guthing out of 
the blood, which is aqueous, and like an 
ichor, prefently ceafes its palpitation. Immedi- 
QO ately 
