(174) 
When I had dlfcerned thefe, I asked the Defigncr, 
Whether he could fee thele Ring-like Stripes, in the Op- 
tick Nerves? and when he faid he could fee them clear- 
ly, I charged him to follow thefti as much as was Pot 
ffibk, as you may fee in Fig. z. and 3. 
Yet if the Fly bad been Dead for fome while, when 
I bad taken out the Nerve of the Sight, I could have 
obferved none of this Wrinkling; as we daily fee, that 
the Mufcles of a Fifti that has been dead for a good while, 
do not contrad themfelves when they are cut in Pieces, 
which we call Krimping ; and in this Cafe, the Parts of 
the Fi(h are not fo hard, nor (b well tailed, as they 
would have been, if they had been cut before they were 
quite dead. 
Having difcovered thefe wonderful Things and Pcrfe- 
drions of the Eye of a Fly, we muft fay again, how lit- 
tle it is we know, and if this is fo in a great Fly, it muft 
be the lame in a lefs one. 
Further, I have fince, a few Days ago, taken out of 
common Flies Eyes, the Optick Nerves, and have lookt 
upon them feveraj times^ becaufe I had great Pleafure 
to fee them in fo neat an Order,and finding them, where 
they do not lie too clofe together, of the Colour of* Red 
Lead. 
I did, when the Defigner was bufy to make the fore- 
mentioned Draught, catch a fmall Gnat, of that Ibrt 
that do not affliS Men, becaufe they are no Blood-Suc- 
kers, nor have no Sting. 
I cut off the Head of this, to draw out of the Eyes or 
Sights, the Optick Nerves ; but I could not Ihew them 
clear enough before my Eyes, although I did attempt it 
three or four times ; in which Undertaking, I took feve- 
ral times the Nerves of the Eye, furrounded with a vaft 
Number of Vellels, which I was fure to be Veins ; and I 
could 
