Of Lice. gr 
pointed part, which is reprefented at dg. 157. whereof 
JL O P is the fnout part of the Ioufe’s head. At O is 
the nipple, from whence the (heath, or cafe M, and 
from within this alfo, the piercer r or fucker N is pudied 
out; at N, its point is fomewhat cleft. Thefe are thrud 
into the (kin to draw out the blood and humours it feeds 
i 
on; for Mr. Hook placed a loufe upon the back of his 
hand that had been fading two or three days, which im¬ 
mediately thrud its fucker into the (kin, and he could 
plainly fee a finall current of blood come diredtly from 
its fnout in a fine.dream to the fore part of the head, 
and then to fall into a roundifh cavity ; it pafles again 
in a like dream to another circular receptacle in the 
middle of the head at A, from thence through a fmaller 
yefiel to the bread ; and then to a gut that reaches to 
the hinder part of the body, where in a curve it turns a 
little upwards. In the bread and gut the blood without 
infermiflxon is moved with great force, and in the gut 
with fuch a drong propulfion downwards, and fuch a 
contradtion of the gut as is furprizing. In the upper 
part of the crooked afcending gut the propelled blood 
dands dill, and feems to undergo a feparation s ; part of 
it becoming clear and waterifh, while certain little black 
particles pafs downwards to the anus. The thorax is 
cafed with a tranfparent horny fubdance, through which 
the blood was varioudy didributed ; and at I, appeared a 
pretty big white fubdance ; many very fmall milk-white f 
veflels were difcernable between its legs, out of which 
on either fide were many minute branchings. The belly 
is covered with a thin tranfparent (kin; at the upper end 
of this its domach K K is placed, and the white fpot L; 
at 
1 Leeuwenhoek’s Exp. & Con. p. 35a. s Phil. Tranf. 
No. 102. * Hook’s Micro, p. 213. 
