The HST ORY. of INSEE OT Ss: 
ftanding the great hopes I had of finding it, 
from having obferved that all kinds of infects 
have very large organs of generation, _ 
The ovary is extended through the whole 
cavity of the abdomen, fo that with its ap- 
pendages it reaches even to the breaft. It 
has an opening diftine from the end of the 
inteftines, for as the upper part of the funda- 
ment is placed in the divifion of the tail, in 
which the abdomen ends ; fo on the contrary 
the vagina or mouth of the ovary opens into 
the lower part of the abdomen, whete the 
body is divided as it were into two parts, Tab. 
Il. fig. viii. as may be feen in doctor Hooke’s 
figure. The ends of extreme appendages of 
the oviduét or egg-paflage are like two tubes 
6666, naturally joined in one point; this I 
have fhewn in the figure by one fide. In the 
oviduct ¢ are feen at once perfect eggs d, and 
their rudiments ¢ or principles ; fo that in one 
ovary I have counted ten larger and forty 
four fmaller eggs, together making fifty-four.. 
In the uterus I faw one perfect egg, which 
was fallen down ready for birth; at that time 
thefe little eggs are called Nits. In my figure 
of the ovary there are fifty-one eggs. — 
The ovary is double # in all Lice, and 
every part of it is fubdivided into five ovi- 
duéts gg, which on each fide end in one 
common canal; next comes in fight the ute- 
rus 4, in which the egg 7 acquires its full 
perfection. Where the uterus ends, is feen 
a facculus or bag full of a glutinous matter 22, 
opening in that part into the uterus; this is 
defigned for faftening the eggs, whilft they 
are laying; the fame may be likewife obferved 
in many other infects, and particularly in Bees. 
I muft acknowledge that I have not feen 
the glutinous matter contained in this bag ; 
but I infer, from the fituation and ftructure 
of the part, that the bag was defigned for 
keeping fuch a fubftance. After this appears 
the neck of the uterus /, and therein is a {mall 
dilatation or expanfion; by means of which, 
the ovary immediately opens itfelf into the 
outward womb, as may be {een at the letters 
aa. 
The oviduéts embrace the eggs fo clofely, 
that fcarce any difference is obferved between 
them m, nor can we feparate the oviducts 
from the eggs, without great labour; when 
we do this, a great many bags of fat iffue from 
thence, which obftructthe fight. It therefore 
has appeared to me, that the ftructure of the 
oviduct is the fame with that of the ftomach 
and inteftines ; though the texture of this part 
is neverthelefs more delicate, and that the glo- 
37 
bular particles proceed from thencé with 
greater eafe, than in the other vifcera. The 
oviducts are provided with many pulmonary 
pipes 7, of which, as we have already ob- 
ferved, this little animal has a very large num- 
ber, though no bigger than a point; its 
ftructure and vifcera, which excel all human 
art, the greateft geniufes ought to be amazed 
at, as I have here, though briefly; yet clearly; 
explained and demonftrated. Iam petfuaded 
that I might make many more difcoveries in it; 
if I had more time for that purpofe, fince I 
have completed this diffetion, and difcovered 
thefe remarkable miracles in this microcofm 
or little world, in the fpace of fix days: If the 
learned Daniel Heinfius had fearched for 
thefe things in nature herfelf, and not in his 
own fancy, and in books, he would not have 
written fo poor an encomium on this infec. _ 
As to the ftrudture of the external skin of 
the Loufe; it affords many particulars worthy 
of obfervation, nor is there any thing that 
bears a greater likenefs to it, than {tiff and 
tranfparent parchment: it is in feveral places 
marked with {mall grooves or channels, in 
the fame manner as the ends of our fingers; 
which, when viewed with the beft micro- 
{copes, really feem to be fo many divifions of 
pulmonary pipes, But the lens of the mi- 
crofcope muft, for this purpofe, be carefully 
managed, for as it is turned one way or ano= 
ther, different things are feen: one cannot 
bring the lens nearer, or remove it further, by 
the leaft diftance, but fomething is imme- 
diately perceived by the fight, which was not 
obferved before: Globular particles, fig. 1x. 
a, fometimes appear in the place of chan- 
nels; or oblong pipes 46, though the eye is 
always fixed on the fame part; then between 
the grooves themfelves, where the skin is 
fimply membranaceous, globular particles ¢ 
are likewife obferved: In other places, as in 
the extremities of the abdomen, the ftruGure 
of the skin is different; for there it feems to 
be compofed as it were of irregular {quares, 
Tab. I: fig. x. d, wherein circular grooves e 
may be {een in one part; in another globules Sts 
in a third, both globules and grooves g, nay 
fometimes the plain tranfparent skin only is 
feen full of points 44; all which, as we have 
before obferved of the oblong grooves, are 
reprefented according to the tran{fparency of 
the parts, which have not been yet totally 
feparated from the inner furface of the skin ; 
or juft as the microfcope is moved, fomewhat 
nearer to, or further from the skin, 
Conclufion to Mr. TH EVENOT. 
All thefe things, moft illuftrious fir, while I 
viewed them. I have carefully delineated with 
my own hand, as you may fee by the figures 
annexed. I fhall now leave you to judge, 
whether chance, by any right, can claim even 
the leaft part in the moft artful ftru@ure of 
the fmall point of the univerfe, which is here 
exhibited; fince fo many and fuch diffrent 
miracles jointly proclaim in it the divine om- 
nipotence. Wherefore though this animal is 
of 
