2? 
A 
Short EXPLANATION of th TABLES, 
Which aré more fully illuftrated in the 
BOLO 'K of NA TUeRE, 
O R, 
PS Or R Yor. LIN, Sue ac. ES. 
By J. Swammerpam, M. D. 
DiA- Beal 
Explains the changes of the firft order or clafs, which are reprefented to the eye, by the affflance of 
. Jigures ; for which purpofe the Loufe 1s exhibited as an example. 
WN. B. The numeral letters diftinctly thew, after what manner the feveral changes fucceed each 
other; fome of the figures are reprefented as they are magnified by the microfcope; the 
reader muft obferve in general, that the fame method is alfo obferved in the examples which 
belong to the fecond, third, and fourth orders or clafles of the changes of infects, 
No. Soa pre ee the nit or fmall egg of a among other inftances, in the Longipede, or 
\J Loufe, delineated in its natural big- long-legged Spider, the legs of which increafe 
nefs; in which the Loufe is contained; being in length when it is cafting its laft fkin. After 
yet clothed in its firft {kin or coat. The fame that is caft, the infe€ts which belong to this firft 
may be feen jig. I. as it is magnified by the order grow no more, neither are they changed 
microfcope. in any refpect ; as may be more plainly under- 
No. Il. Is the empty fhell of the egg, or the ftood from the figures of the following exam- 
coat or {kin of the nit, caft off by the Loufe; ples of the four orders, undernumber V. and VI. 
after it has crept out of it. No. VI. The Loufe, having attained its per 
No. II. Shews the Loufe juft excluded from fect ftate, and being fully grown, fo that it is 
its egg, where it plainly appears, how the crea- now capable of generation ;_ is reprefented Sik 
ture has crept out of the membrane wherewith III. as magnified by the Microfcope. 
it was furrounded, in a perfect flate; and is 
not obliged to undergo any further change, F.L.G... I. 
tho’ afterwards it increafes in bignefs, and often 
changes its fkin, Therefore we have named {he egg, or nit of the Loufe, as magnified by the 
the Loufe in this ftate, an oviform-nymph- Microfcope. 
animal: becaufe it iffues from its coat or {kin, 
perfect in all its limbs. a The oviform border or margin, with which 
No. IV. Is reprefented the fame Loufe fome- the head of the nit is furrounded, within 
what bigger, and invefted as it were in its third which are vifible certain little cups or uvule, 
or fourth fkin; which alfo foon after is to be of no regular or determinate figure. Thefe 
ealt off, © cups appear a little bent, and then again {well 
No. V. The Loufe, having now attained to out in the middle, as it were into a whitith 
the full period of its increafe, in which ftate top. It is obfervable that thefe cups do not 
we called it a nymph-animal; from its being wholly fill the internal parts of the border or - 
then in its laft fkin that it theds, and indeed we margin with which the head is furrounded. | 
mect with fome infects in the firft clafs, which 24 Are two tender {wellings or extuberances, 
are alfo fomewhat changed about the time that wherein are placed the eyes of the Loufe ; 
they caft their laft fkin, which plainly appears, whilft its limbs yet remain moift and foft. 
Bs Thefe 
