C«8i] 
'^Ah AhJlraSi of a Letter of Mr. Anthony Lcewen- 
lioek Fellow ^)/ /^e R. Society; concerning the 
parts of the Brain of fever all Animals ; the ChalK 
Stones of the Gout; the Leprofy ; and the Scales 
^/Eeles. 
HAving lately been imployed aboiait the Eyes of 
Tiirky Cocks , I proceeded to examine the Brain 
and rho' in my Letter of the 14 th. of May 1677, I 
have already treated of that lubjeiSt:, I lhall take no no- 
tice thereof, butlay down my Obfervations lhope more 
diftindily and lubftantially then before. 
Ifirft tookinhand the Cortical ^^LXX^ of the brain of a 
Turky Cock, thefe parts (a great number of fmall blood 
Vellels and fmall Globules excepted,) confift of a very 
clear CryftalliaeOily matter, which for its tranfparency 
ought rather to be named ^/^r^<?^ then C<?r^^r^/* Wbeft 
I feparated a little of this matter from the reft, there 
flowed from the place (tho' it fpread lefs then loth of a < 
hair,) a little thin moifture, containing init fome ex- 
tream imall Globules, lefsthen^th part of one of thofe 
which make the rednesin the blood. It is to be noted : 
that this fluid matter, was eheifily in the brainoffuch i 
Turkeys, as had been dead for fome time. It is alfo laot 
improbable, that a part of this moifture might flow out 
of fome of the fmall VefTels, or that fome of the very 
minute VefTells might have been turned into a watery 
fubftance. 
Befides the aboue mentioned fmall Globules, there 
were alfo fome about the bignefs ofgth of a Globule of 
our blood. Thele two forts I conceived might have 
come from fmall VefTels which by chancel had broken, 
being made out of the groffer parts of the fluid, at the 
time that the humours grow cold and Itagnate. 
Together with the above mentioaed Globules, there 
H 5 wer@ 
f 
