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PROFESSORS D. FERRIER AND G F. YEO ON THE EFFECTS OF 
It was able to climb and in climbing held on by both bands and with the left foot; 
but the right leg, except for feeble flexion of the thigh on the pelvis, was not moved. 
The face was normal on both sides. Equal signs of sensation were caused by the 
application of heat to either leg. 
At the end of a week the right leg was still dragged in walking, but the thigh 
could be flexed on the pelvis. The right arm at this time was occasionally subject to 
spasms, about the shoulder muscles particularly. In the intervals it could take hold 
of pieces of food, and hold them while eating. 
At the end of ten days the animal, in running, carried the right leg, using the arms 
and left leg freely. The right arm occasionally exhibited spasm on being advanced in 
walking or in laying hold of things. This spasmodic tendency entirely disappeared 
alter two days longer, but the right leg was still carried in running, flexed at the 
thigh and knee. 
Three weeks subsequent to the operation the condition was similar, the right leg 
being capable of flexion at the pelvis and knee, but the foot unable to be used for 
laying hold or climbing. Some slight movement of the ankle-joint was all that the 
loot seemed capable of. 
A month after the operation the animal was able to run about with great activitv, 
carrying the right leg, and also to make considerable leaps, alighting on its hands and 
left leg. 
Six weeks after the operation the relative strength of the limbs was tested while 
the animal was held. The hands seemed equal in their grip and power of resisting 
passive movements. The right leg resisted extension of the thigh and extension of 
the leg, but the foot could be flexed, extended, and moved in various directions 
without resistance. 
The sensibility to pricking w T as evidently equal on both feet, judging from the 
appearance of attention and general movements, but the cutaneous plantar reflex 
reaction was less distinct on the right than left. 
Six months after the operation examination of the patellar tendon reactions showed 
that the right was considerably exaggerated as compared with the left. There was 
well marked rigidity. On dorsal flexion of the right foot, the leg bent on the thigh, 
the hamstring and sural muscles being very tense. When the leg was straightened, 
which caused evident unea.siness, the foot pointed and could not be dorsally flexed. 
Seven months subsequent to the operation the same condition of rigidity of the 
right leg was very marked. The cutaneous plantar reflex of the right foot was also 
distinctly less than of the left. 
Eight months after the operation the rigidity was still more pronounced, extension 
of the leg causing pointing of the toes, dorsal flexion of the foot causing flexion of the 
knee, and abduction of the thigh causing tension of the adductor muscles. All these 
passive movements caused uneasiness when the antagonist muscles were put on the 
strain. 
