110 CONSCIOUSNESS AND SENSATION. 
connection with its distribution. Further, the hypo- 
thesis facilitates the explanation of muscular sense, 
and accounts for what has been observed by Dr. 
Brown-Séquard, that the tracts for muscular sense 
do not decussate in the spinal cord. The pheno- 
mena sought to be explained by the hypothesis of 
muscular sense are the consciousness of the posi- 
tion of a part, the capability of regulating its 
movements even when ordinary sensation is para- 
lyzed, and the consciousness of the maintenance 
of muscular effort in such parts. The hypothesis 
which I offer in explanation of these phenomena is 
that by continuity of the impressed condition from 
the brain to the distribution of the motor nerves. 
we are conscious of the parts to which the distribu- 
tion extends, and of the exercise of the will within 
them. But, it will be alleged in reply, when we 
move our fingers we feel the movement not in 
the muscles of the forearm, but in the fingers. I 
think, however, that this difficulty will not appear 
so great when we analyse our sensations in endea- 
vouring to make some unaccustomed movement. 
Thus, although in moving our limbs we are not 
conscious of any sense of effort which we could 
localize in the region of the muscles brought into 
action, unless perhaps when unaccustomed resist- 
ance is met with, it is different when one attempts 
