[ 887 ] 
alfo perceived, brown ftfeakes running thro* the Af^iif/- 
/«rj part of the brain, which were only caufed, as I con- 
ceive, for that there were but few, or none of thofe tranf- 
parent Globules, there placed. 
lexamined fomeofthe parts, which lay neer the be- 
ginning of the Medulla Spinalis s and I fometimes 
thought, I had found out a thing tliat I wasdoubtfuil 
of, in the brain of a Turkey: vi:^. That the great tranf- 
parent Oyl-like Globules, were, as ic were furrounded, 
with an innumerable quantity of extreme thin, and net- 
like Veffels orftreakes, mixed with fome thicker Veffels, 
which lay in a line, and excelled in tranfparency, caul- 
ing thereby, where they lay in numbers together, the 
brain td appear very white ; thefe were in thicknefs about 
Ijth part of a hair or fomthing lefs. The other fubftances 
were little differing from what I have before mentioned 
in the brain of a Turkey. 
Afterwards, I carefully examined the brain of an Ox, 
and fatisfied my felf, that the Vitreous, and very tranfpa- 
rent matter, which makes up moft of theComV^^/part, 
confifted of nothing but extreme thm ftreakes or Veffels, 
which were neerly joy ned together : but at another time, 
I could not to content, affure my felf concerning the 
fame. As to the remaining fubftance of the Cortical 
parts, I could difcern no difference, from the brain of 
other Animals ; but that there was not fuch a Quantity of 
fluid matter, as in Animals which had been longer dead. 
I found alfo the Medullary fubftance of the brain, to be 
fuch as I have before mentioned in a fheep : for it had 
very white ftreaks, in the parts from whence the Medul^ 
la Spinalis taketh its rife: this extream whitenefs, was 
fromfeveral very tranfparent Veffells, which lay next 
one the other,and feemedto me, only made to carry the 
matter, by which, the Medulla Spinalis and Nerves, arc 
partly nourifhed and maintaiaed. Thegreateft of thefe 
laft Duds, Cby guefsj was about lis part of the thicknefs 
I of 
