[ = 3 « ] 
blood } and fmall cords occupying the 
place of the optic nerves, were like wife of 
a red colour. Yet the foinal marrow and 
all the nerves from it, had the ordinary 
fize and appearance.” 
u Ifl a monftrous kitten with two 
bodies, and appearance of one head, I 
found the fpinal marrow of one of the 
bodies connected with a brain and cerebel¬ 
lum of the common fhape and fize, but 
the fpinal marrow of the other body, 
though equally large, had only a fmall 
button of medullary fubftance at its up¬ 
per end, without a fu it able brain or cere¬ 
bellum.” (Monro’s Obfervations on the 
Nervous Syftem.) 
The fame ingenious phyfologift has re¬ 
peatedly cut acrofs the fpinal marrow or 
the trunk of the fciatic nerve in living 
frogs, and fed the animal for upwards of 
a year thereafter. In fome of them the 
fciatic nerves were rejoined, but in none 
of 
