GC OON TP 
Dc Aaa 
Grea, Pals 
z HE defign and diftribution of the work. 
page I 
Crean FF i: 
‘The fingle foundation of the changes obferv- 
able in known infeGts, fhewn to be the 
Nymph ; with an explanation of the man- 
ner in which Worms and Caterpillars be- 
come Nymphs 3 
© HA Pod. 
The manner in which the true knowledge of 
the Nymph, the real foundation of all the 
natural changes obfervable in infedts, has 
been obfcured and corrupted ; with an illu- 
ftration of the fubje@t, and an entire reftitu- 
tion of its original truth 10 
Cro ASPs Ve 
Of the four orders of natural changes, to 
which Wwe refer, nearly, all the fpecies of 
infe@ts, as having the fame fole principle of 
change 17 
DH EE LR. ST PO RE Rs 
Of the natural changes, or flow accretions, of 
the limbs Pai 
A catalogue of the infects which are referred 
to in the firft order of natural changes, called 
the Nymph-Animal 20 
The natural changes of the firft order of in- 
fects, exemplified in the Loufe ; with an 
explanation of what relates in general to the 
other three orders 29 
A letter to Mr. Thevenot, containing the 
diffection of the Human Loufe 30 
The external parts ib. 
The internal parts 41 
The conclufion of the letter to Mr. Thevenot 
An explanation of the changes of the firft nee 
which are exhibited to view, by the affift- 
ance of figures, for which the Loufe is pro- 
duced as an example 38 
Of the arborefcent, Water-Flea 39 
A particular treatife on the Scorpion, which 
likewile belongs to the firft order of natural 
changes At 
The natural hiftory of the covered Snail, illu- 
{trated by accurate drawings 43 
OcH VAG Psst: 
~ OF the fhell and foft part of the Snail in 
general, and particularly of the four horns 
which {pring from the upper part of its head, 
and of the eyes that appear in.them ; with 
a defcription of the conftru€tion and motion 
of thefe parts 44 
© FAP with 
Of the lips, mouth, teeth, tongue, palate, 
cefophagus or gullet, and certain mufcles of 
the. Snail 48 
Cth APPIN 
Of the tafte, fmell, and certain actions of the 
Snail ) 49 
ENTS 
1 I, 
iis “Ee AO Ps, ATV. , . 
Of the ftructure and ufe of the verge or lip 
of the Snail, and of its refpiration and found,. 
with other experiments: alfo of its glands, 
veffels, and what it has in the place of 
feet ‘an 50 
. Cel A Pe » Vs 
Of the ations, ftrength and -life of the 
Shail. How it is to be killed for, diflec- 
tion, with further experiments; and an ac- 
count of the effect that Salt has upon this 
creature Yieeiad se 
. Cale AnP x 6 Vib ie 
Of the internal parts of Snails; and firft of the 
heart, its auricle, the vena cava, and aorta. 
And alfo of the blood, and its perpetual 
circulation. Of the difference of the flimy 
humour from the blood of the cavities of 
the, verge; and alfo of the facculus calcarius, 
or bag of alkaline matter. To which is ad- 
ded, a curious experiment; pertaining to the 
motion of the mufcles ei 6% 
CHP Ag Re, «Vaile . 
Of the bile; ftomach; inteftines; and falival 
veflels of the Snail 55 
CoH GAY PsayVdbk: 
Of the genitals, penis, utetus, teftitles, ovary, 
and other parts {ubfervient to generation 56 
GC HA P:.- IX: 
Of the manner in which Snails mutually per- 
.. forming the bufinefs of coition 58 
GED Ac Pig X 
Of the brain and nerves, and in what manner 
thofe parts have their mufcles, whereby they 
are moved backward and forward, in the 
body ; a wonderful particular not hitherto 
known in any animal 60 
CNP ALPES OT. 
Of the mufcles of the body and thell; which 
is the bone of the Snails: in what a won- 
derful manner this fhell is formed on the 
infide, and how it is increafed and nourith- 
ed. Laftly, how the Snail moves in its 
egg O1 
CHAP! oXIks. «) 
Of the Hermit-fith, and Pinna Marina. Of 
the inward turnings or convolutions of the 
turbinated fhells. Of the Voluta or Cylinder, 
the Concha Veneris; and Pencil, and forme 
other fhells of the Snail kind 66 
The little Turbo 68 
The fmall flatted Snail 69 
The oval Snail ib. 
HA Pe) XL. ; 
Of the garden Snail, the houfe Snail, and that 
of fields or path-ways 
° 
Of the garden Snail ‘, 
Of the common houfe Snail 71 
Of the field or path-way Snail a 
Gy oP SERV 
Of the common water Snail, alfo of an un- 
common and viviparous kind of water Snail ; 
3 
3 
& and 
