f834 ) 
it beateth, and its motion in beating is fudden, and fwift. 
F6t which reafons alfo it is hard to perceive ihelnfed to 
Beat, without a very fevere Eye : And theretore I made 
ufe of a Convex-glafs, which by magnifying- gave me 
much better opportunity ot obferving^ 
This ticking Noife, I judge (as betore) a Wooing ad 5 
by reafon I obferved another fafter much beating) to 
come, and make offers to the Beating Infeft 5 who (after 
fome oflfers) left off his beating, and got up upon the back 
of that other. When they had conjoyned, he got off 
again, and they continued fome hours joyned tail to tail, 
like Dog and Bitch in coition. The Female (which I 
fawj was fpmewhat bigger than the Male, and lighter 
in colour f inclining to a yellow : ) but whether all are 
fo, I know note 
I have often heretofore, by the noife purfued the makers 
of it 5 but have, thought my felf difappointed, when I 
found nothing but fome of thdQ PedicuU, which I did 
not perceive to beat, and which I little imagined could 
have made fo fonorous a noife, as I have heard fome oi 
them do, even as loud almoft aS the ftrongeft Beats of a 
Pocket- Watch. But lately finding a piece of Paper in my 
Study, in which I was fure the Beating was, and it being 
luckily loofely folded, fo as to be viewed throughout, 
and alfo happening to lie in a good light, I ftriftly view- 
ed it; but could only fee fome of thofe Pediculi. And 
viewing them with a Convex-glafs, I foon perceived fome 
of them to beat, or to make a noife, with a fuddcn fliake 
of their Body, as hath been defcribed. And I am now 
fo ufed to, and skilful in the matter, as to be able to fee, 
and (hew their Beating, almoft^ when I pleafe, byhayihg 
a Paper with fome of them in it conveniently placed, and 
imitating their pulfations 3 which they will readily_ahfwen 
Wnether this Infeft changeth its fhape, and becpmeth 
any other Animal, I know not : but 1 have fome caufe 
(tho very little) to fufped that itbecometha fortot f/> 
