The 
rings: and as the body was wrinkled at that 
time, it happened that thefe pulmonary tubes 
were turned out of it, through the pofterior 
apertures Of the tail, and remained fixed to the 
refpiratory points or breathing-holes of the 
outer fkin. From confidering therefore this 
polition of the exuvie, it is ealy to underftand 
how the infect has at that time, befides other 
changes, fuffered fo great a contraction of its 
body. The extended extremities, or ends of 
thefe pulmonary pipes, being protended for- 
wards, are curled and twifted, 4; which pro- 
ceeds from hence, that when the Worm con- 
tracts its body upwards, from the tail to the 
thorax, thefe pulmonary tubes are, by their 
own infertions, and this force, thrown out of 
the body: and hence it happens, that thefe 
being afterwards left to themfelves, they fly 
back, as it were, and from ftraight run into 
curled ftrings or cords. This I once plainly 
faw, when I opened the fkin about that time. 
The like operation has place alfo, with re- 
fpect to the inner ¢ coat of the inteftines; 
which then likewife feparates from the body, 
and remains fixed to the fkin, very beautifully 
reprefenting the complicated web of a Spider. 
Within, in this little inteftine, which is of a 
beautiful white colour, are found fome par- 
ticles, like grains of fand, clear as alum, and 
confifting of many points and divifions. I firft 
thought thefe were fand; but I afterwards faw 
that when they were mixed with fpirit of vi- 
triol, they fermented very ftrongly, which is 
not a property of fand. And, therefore, as I 
am unable to explain the nature of many other - 
parts, fo I do not know what this fubftance is; 
whether it be of any ufe in the body, or whe- 
ther it probably contains the calcarious, chalky, 
and alcaline particles of excrements? I there- 
fore, here again, candidly confefs my own great 
ignorance. If we invert this part of the in- 
teftines, and the tail, we may likewife {ee how 
the feparating inteftine, Tab. XLII. Fig. rv. a, 
inwardly detaches itfelf from the inner cavity 
of the ftraight gut or rectum, 4; and, when {e- 
parated, remains fixed to the external orifice of 
the fundament, which opens ¢ within the outer 
fkin. This I have roughly delineated, the 
better to explain it. 
* It is univerfal among infects, that the creature which has put off its exuviz, or caft its fkin, 
than it was before. ‘This is indeed true in faét, as well as in appearance. 
HIS GOR WY of DNPSiBe Ts: 
59 
In the anterior or fore-part of the Worm’s 
exuvie; are feen the legs, beak, eyes, Fig. 
tr. d, and fkull, e, left and cat off together *. 
There is likewife feen the coat, which parted 
J irom the internal furface of the gullet and 
ftomach. But it is neceflary to take notice 
here, that every thing, hitherto mentioned, 
happens when the ereature firft aflumes the 
form of a Nymph. 
When. it afterwards, upon breaking forth 
under the form of a Fly, quits this outmoft 
{kin and the inward pellicle together, there are 
again other remarkable things obferved, which 
I thall now defcribe. In the firft place, I ex- 
hibit, as now caft off, gg, the hitherto hidden 
inward coat, which had invefted all the 
Nymph’s limbs and parts, and which is now 
irregularly broke open in the fore-part, toge-— 
ther with its outmoft fkin. This may, indeed, 
be eafily done, on account of its thinnefs. In 
its hinder part,-one may fee where the tail, 4, 
or the extremity of the Fly’s body, was before 
fituated within it.. In each fide of this fkin 
are feén the pulmonary tubes, rolled out, and 
all terminating 77 in a pointed extremity, like 
fo many {mall tops or points of needles, tho’ 
each of them may be very eafily feparated into 
many: branches. 
But it muft be here again obferved, that 
thefe pulmonary tubes do not feparate or go 
off, when the Worm is changed into a Nymph: 
for, otherwife, the Worm mutt have crept out 
of its external {kin ; as, indeed, i; always the 
cafe in fome other orders of tranfmutations. 
But fince that does not hold here, therefore 
the moft wife Creator has ordained that thefe 
changes fhall happen, when the Worm, on 
forfaking both its fkins together at the fame 
time, and being -cloathed in more noble orna- 
ments, and under this form afterwards dig- 
nified with the name of a Fly, is to. come 
to light. Thefe things, indeed, afford us mat- 
ter very worthy of confideration. We are ex- 
cited to induftry not only by the {mall Ant, 
but may draw knowledge and learning from 
the contemptible Fly... And thus all things 
tend, at length, to the honour and love of the 
Supreme Architect, whofe works are evidently 
the open books of Nature. 
immediately appears much larger 
The body has by degrees grown under the fkin, tilt it 
is too large for it; and this is the very reafon of the throwing it off. As the increafe has been gradual, and the t foft, th 
fkin has preffed them together, and they lie clofe; but as foon as this fkin is caft off, they diftend themfelves, feof pe 
their proper form. 
CHAP, 
