1884. ] Physiology. 437 
At the meeting of the International Medical Congress, held in 
London, in 1881, Goltz exhibited a dog, and Drs. Ferrier and Yeo 
amonkey, both of which animals had months previously been sub- 
jected to cerebral operations, and had long been in complete 
health. After a study of animals by members of the Congress, 
a committee was appointed, consisting of Mr. Langley, Dr. Klein, 
and Professor Schafer, to make anatomical and microscopical 
examinations of the two brains. The committee has recently 
presented an exhaustive report on the subject submitted to it. 
The dog, when still alive, when let loose in a room, wandered 
with wagging tail, hither and thither, carefully avoiding obstacles 
and using his muscles in a perfectly normal manner, with the 
exception of an occasional slipping of the feet upon the floor, 
and rather general clumsiness of movement. It was clear that 
To use now the words of the report: “ Professor Ferrier, Lon- 
don, called attention to the condition of the monkey which he 
a occasion whatever, did it show any volitional action 
wa ir right hand or arm.” One of the chief difficulties in the 
of ty of the committee which made the post-mortem examination 
€ two brains, was to determine the homologies of the various 
The oc organs. This could not be done with certainty. 
extensj ction of the dog’s cerebrum was somewhat more 
have “ign the right side than on the left. There appears to 
three-fo complete and-deeply extended destruction of about 
; ste the substance of the cerebrum ; the ava of the 
i inferi ing intact included the anterior fourth, the superior 
hp : » median-latéral portions. Most of the so-called 
In th areas appear to have been included in the lesion. 
e monkey it was found that the greater part of the two 
“® ©onvolutions, together with adjacent parts of the frontal 
