C 9^ ) 
thefe Threads ) nearefl to the Eye , were moved by 
theObjetf, by this means not only the next, and fofuc- 
ceffively all the Globules in that Thread ; and laftly, the 
Brain itfelf would be moved. I have found the fame 
fince in the Optic Nerves of four Horfes Eyes, and if it 
be not allowed that the fight is thus performed, yet it 
mud be granted, that great plenty of new matter con- 
tinually thus flows from the Brain for the nourilhment 
and generation of the Eyes. 
I examined the Gall of a Trout , and found therein a 
very great quantity of finall Globules, leller than Blood- 
gobules, and yet a greater number of much fmaller ones 
fcarce to be difcovered by my btft Microfcopes, fo that 
1 think it impoffible the Liquor fhould be fo very fluid, 
unlefs thefe Globules fometimes changed Figure, and that 
eafily as they paft by each other. But what Method fo- 
ever 1 made ufe of, yec I could not difcover any (alt Par- 
ticles therein, which was my aim. 
I obferved the Skin of a very large Eel, and found the 
Scales on the Back and Belly, in ftrait Rows one upon 
another, but thofe cn the fides were fome (leaping to- 
wards the Belly, others towards the Back, but all down- 
wards. Examining the Matter or Slime covering thefe 
Scales, which is generally thought to come from without 
to the Scales, whereas it is a real part of the Body itfelf, 
furniftit with Capillary Veflels, and Veins admirably in- 
terwoven ; ol which fome are fo very flender, that if a 
common Blood -gobule were divided into a Thoufand 
parts, one of thefe could yet fcarce pafs them. From 
which Obfervations I conclude, this Slime is but as the 
Cuticula that covers the Scales, and if thefe be rubb'd off 
by any external Accident, the Eel will nor live long. This 
outward Skin of Eels, as I call it, I found cover'd with 
veryfmall round Particles, not a fourth part fo big as 
thofe whereof the Scales feem to beccnftituted. 
That 
