( 49*) 
4. The fame Milfighi thought he (lieuld have met with the fame thing 
in Terre/irhl Animals s but he found^ that Fijhes alone have fuch a ftru- 
dure of the Optipe Nerve : For that of an Ox, Pig, and other fuch Ani- 
mals, is nothing but a heap of many (mall Fihes of the fame fubftancc 
with the Brain, wrapped about with the Dura Mater, and accompanieo 
with many little veflels with blouJ, Hence he draws the decifion of that 
great queftion among Anatomifts Whether the Optique Nerve be hollov» 
ernotf For, jaithhe^ it cannot be otherwife, but there muft be many 
cavities in this Nerve ; forafmuch as the fmall filaments, of which it is 
compofed;cannotbe foelofely joyned, that there {hould not be fome void 
fpace betwixt them, 
5. Concerning the Tongue^ the fame Author hath difcovered in it many 
little Eminences J which he calls Papillary, and believes to be the princi- 
pal Organ of T afle. But here is not to be omitted 
the Obfervation of Fucffati, importing, that as Ij^:;^?,:;-; I'.'^S 
the Tongue hath towards its point many Eminen- account i$ given of this aifco- 
ces, by the means whereof it goes, as it were, to p^;!'.»^.'°"y!l^'^'^"'5V/^''^''' 
meet objects or Tafte 5 lo on the contrary, it hath ^ 
many cavities towards its reot^ wherein it receives them. All which ca- 
vities terminate in nerves^ and feem to ferve for Funnels to conveigh the 
aliment into them. Which maketh the Author think it very probable, 
that the fineft part of the aliment paCfeth immediately from the Tongue in- 
to the Nerves^ whence it comes to pafs^ that Wine^ being only taken into 
the mouth;, reftoreth vigour prefently. 
An Experiment of Signior Fracaffati upon Bkud grown coU, 
When any bloud is become cold in a difh, that part which is beneath 
the (jiperficies appears much blacker, than that on the top and 'tis vulgar* 
ly faid, that this black part of the bloud is Melancholy bloud, and men are 
wont to make ufc of this example to fhew that the Melancholy humor as 
'tis called, enters with the 3 others into the compofition of the bloud. But 
Signior Fr4f^(j4// maintains, that this colour comes from hence, 
that the bloud, which is underneath, is not expos'd to the Air, and not 
from a mixture of Melancholy : to prove which he aflures, that upon its 
being cxpos'd to the Air it changes^ colour, and becomes of a florid red. 
An Experiment as eafie to try , as 'tis curict^. 
Sm4 
