252 Evolution and Adaptation 
Romanes, who later went over the same ground, in part 
under the immediate direction of Brown-Séquard himself, has 
made some important observations in regard to these results, 
many of which he was able to confirm. 
He did not repeat the experiment of cutting the cord, but 
he found that, to produce epilepsy, it was only necessary to 
cut the sciatic nerve. The “epileptiform habit’? does not 
appear in the animal until some time after the operation; it 
lasts for some weeks or months, and then disappears. The 
attacks are not brought on spontaneously, but by “irritating 
a small area of the skin behind the ear on the same side of 
the body as that on which the sciatic nerve had been divided.” 
The attack lasts for only a few minutes, and during it the 
animal is convulsed and unconscious. -Romanes thinks that 
the injury to the sciatic nerve, or to the spinal cord, produces 
some sort of a change in the cerebral centres, “and that it is 
this change — whatever it is, and in whatever part of the 
brain it takes place —which causes the remarkable phenomena 
in question.” 
In regard to Brown-Séquard’s statements, made in the 3d 
and the 4th paragraphs, in respect to the results of the 
operation of cutting the cervical sympathetic, Romanes had 
not confirmed the results when his manuscript went to press ; 
but soon afterward, after Romanes’ death, a note was printed 
in Mature by Dr. Hill, announcing that two guinea-pigs from 
Romanes’ experiment had been born, “both of which ex- 
hibited a well-marked droop of the upper eyelid. These 
guinea-pigs were the offspring of a male and female in both 
of which I had produced for Dr. Romanes, some months 
earlier, a droop of the left upper eyelid by division of the 
left cervical sympathetic nerve. This result is a corroboration 
of the series of Brown-Séquard experiments on the inheritance 
of acquired characters.” 
Romanes states that he also found that injury to a par- 
ticular spot of the restiform bodies is quickly followed by a 
