361 
tinually for a term of years, or undertake a journey of indefinite length on 
foot through a tunnel not quite high enough to stand upright in, you will 
get an idea of the feeling.” 
In Figs. 4 and 5 I have indicated the location of the areas affected as 
described to me by Mr. Laxton. These areas range from a “dull sensation” 
to “very marked” and “maximum.” It is interesting to note that the dis- 
turbance becomes more and more marked toward the feet. That while 
there is a great disturbance in all the toes of the right foot, this disturb- 
ance increases from the little toe and the center of the bottom of the foot 
to the hallux, where it is maximum. 
One observes, also, that with the exception of a small area on the 
bottom of the left foot, which is very slightly affected, the disturbed areas 
lie wholly on the right side of the body. This we would naturally expect, 
as the greater part of the depression is on the left side of the median line 
of the skull. Since the depression extends slightly across to the right of 
the median line, we would expect some disturbance on the left side of the 
body. The slight disturbance on the bottom of the left foot would indicate 
that the portion of the brain close to the median line controls the center 
of the foot. We would expect a greater disturbance in the corresponding 
part of the right foot, because the corresponding area of the brain lies 
more nearly under the center of the depression. 
We may, I think, reasonably infer that the region of greatest dis- 
turbance is controlled by that part of the brain lying under the center of 
the depression. Therefore the motor area controlling the movements of 
the great toe would lie about the center of the depression, and that of the 
small toes and the center of the bottom of the foot, in close proximity. 
As we have already concluded that the cortical area controlling the center 
of the bottom of the foot lies adjacent to the median longitudinal fissure, 
that for the small toes would be farther removed from this region than the 
center for the great toe. I think we may also conclude that the parts less 
and less affected are controlled by portions of the brain lying nearer and 
nearer the margin of the depression. The movement of the hair near the 
anterior margin producing a tremor in the calf of the right leg, would in- 
dicate that the motor center for this region is at this point. 
Since all the muscles of a given region, i. e., thigh or calf of leg, are 
not equally affected, one may infer that different muscles of the same re- 
gion may have somewhat widely separated centers of control in the cortex, 
