C 1\7 1 
a tlireddy fubftance, like that whereof the Crijlallim 
humor confilts : I ihall only mention two of them, vi^. 
I take a clean wine Glals, and hold the Rim thereot dole 
againft the J^upiloi one of my Eyes, while my other Eye is 
clofed 5 and looking thus, firmly through the l^m of the 
Glals, againft the flame of a Candle, or other light, I per^ 
ceive the thred-Uke appearance above named 5 as i£ 
through a Microfcope^ I had-beheld a piece of a fcale of 
the Crtjiallm Body ot the Eye. Or clofing one Eye^ I hold 
the fingers of my hand, before the other Eye, io clofe to-^ 
gether, that they leave but a fmall opening between 
them this fmall fpace between the fingers, through 
which the Eye receiveth the light of the Candle, will re^ 
prefent a. like thred-like appearance, as in the former 
inftance. 
I have often been aware, of a moiflure lying on the 
out fide of the Pupil of the Eye, containing fome few very 
imallGlobules ; which as oft as we clofe our Eye Lids, 
change place : From hence may be learnt, the neceffity 
of the Eye Lids in us j and why Ftjhes which continually 
live under water, need them not, but fliould Men and 
other -^W;?^^//, that live out of the water, not have them, 
they would foon be blind: For if the Eye Lids by their 
eloiing, did not conflantly moiften the Eye, the fuperfi'^ 
cies thereof, would dry upand Rumple: and that chiefly 
in the Sun.ox before a hot fire. Alfo it is not improba- 
ble, that from the inner part of the£y^ a moifture con- 
tinnually ifTueth through the Cornea Tunica, which by 
Eye lids is cleanfed off" 5 for when I had examined feveral 
Hogs Eyes, w\iic\i \i2idL been fcalded with hot water, to 
get of the hair, I for the moft: part obferved, that a thin 
Eilm, which was on the Cornea Tunica oi the Eyey was 
lomewhatfinged ; whereby itwaseafily feparated, from 
that film, that was immediatly under it v and when I 
then prefTed the £y^, a little, between my fingers, I per- 
ceived in feveral places^ a thin watry matter to loa^k 
