[S88] 
of a hair of ray Beard ^ but at other times, I have difcern- 
ed them thicker, and according to all likelyhood, I 
here met with a place , where thefe tranfparenc Veflels 
werethinneft. In all thefe my Obfervations , I pals by 
many blood Veffels, which are vifible to the naked Eye* 
for they are to appearance, like whole Rivers; whereas 
t«he other fmaller Veflels, ofwhich l have before fpoken, 
feera, but like Imall Ditches or Channels. 
I have alio examined, the Vitreous or tranfparent parts^ 
of the brain of feveral Sparrows, immediately alter their 
being killed ; and have therein, not only cleerly dif- 
eern'd,a great number of fraall blood Veflels, as in a 
Turkey ; but as plainly, as in an Ox,orlheep. Alfp the 
other parts, of the brains of a Sparrow, were veryneer 
6f the fame bignefSj with thofeof anOx: there being no 
other difference /the great blood Veffels excepted J but, 
that thefe confifled of a greater number of the fame 
parts. There were alfo, in the Cortical ^^ns, an incre- 
dible number of extream fmall Veffels, lying fo clofe 
to one another,that by reafon of their tranfparency, they 
look't like Glafs. The fmallnefs of thefe Veffels, I have 
fo often meafurcd, that I have no fcruple remaining: 
nor will any one elfe doubt, who coufiders, what the 
Organs muft be in Infeds, or whalt proofs thereof, we 
have withinourffelve^;^ #ofi asl lately anotomized th^ 
Eye of a Man, I compared a ftreak or Veffel,! found in 
the t/-^<?roi^^j-, with the Axe of a couffe fand, that was*^ 
^th ofan lnchj making upon my Scale 3 3 0 Mierofcopi- 
cal parts, now S of thefe fireaks, lying by the fiiife of one 
a dother, m^de hxxt<^i c^tk^P^Q^biVaei^nS, f^'that ;the 
forefaid A^tc, is 2 (54^ times broader thfen the ftreak. This 
number 2(^4<2)/ multiplyed: Gubically, to finde out the 
folid content^ it will make out, -above 1 8' tlioiif^ nd niil- 
lic^ns .-vfo thad^a^^cours- Saiidv as befordisfad>d, ougl^^^ to be 
divided, xiii)DO/fD mihy. hht^lA'^t^miiiiQkfi^r^ 
