f&t 
4. The fame Malpighi thought he fhould have met with the fame thing 
inTerreffrial Animals $ but he found, that Fijhes alone have filch aftru- 
dure of the Optipe Nerve : For that of an Ox, Pig, and other fuch- Ani- 
mals, is nothing but a heap of many (mall Fibres of the fame fubftance 
with the Brain, wrapped about with the Dura Mater , and accompanied 
with many little veffels with bloud. Hence he draws the decifion of that 
great queftion among Anatomifts •, Whether the Optique Nerve be hollow 
or not? For, faith he , it cannot be otherwife, but there muft be many 
cavitiesin this Nerve ; forafmuch as the fmall filaments, of which it is 
compofed, cannot be foclofely joyned, that there fhould not be fome void 
fpace betwixt them. 
5. Concerning the Tongue, the fame Author hath difeovered in it many 
little Eminences , which he calls Papillary, and believes to be the princi- 
pal Organ of T ajle. * But here is not to be omitted 
the Obfervation of F/acaffati, importing, that as 
the T ongue hath towards its point many Eminen - account is given of c hi» difeo- 
ces , by the means whereof it goes, as it were, to very»ft°m thcircaufe of i mr . 
meet objects or Tafle 5 to on the contrary, it hath J 
many cavities towards its root, 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 paifeth 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 Fracaflati upon Bloud grown cold. 
When any bloud is become cold in a difh, that part which is beneath 
the [aperficles 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 ufe 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 Fracaffati maintains, that this hlackljh 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 allures, that upon its 
being expos’d to the Air it changes colour, and becomes of a florid red. 
An Experf?nent as e a fie to try , as ’tis curious* 
Some 
