98 [May 15, 



The skin over the back of the forearm, that of the carpus, of the 

 thumb, of the two first phalanges of the index, and over the outer 

 half of the thenar eminence was nearly insensible to the contact of 

 external bodies ; but when pricked or pinched, pain was produced 

 of a hot, burning character, which lasted for about a minute after 

 the removal of the cause. Over the back of the other fingers, i. e. 

 the median, annular and little fingers, and the last phalanx of the 

 index, no loss of sensibility could be detected. 



Flexion of the fingers was very imperfect ; their tips with diffi- 

 culty could be made to touch the palm of the hand. The move- 

 ments of the last phalanx of the thumb were almost paralysed, 

 while those of its second phalanx and metacarpal bone appeared 

 little affected. 



The apposition of the tips of the thumb and index, as well as 

 that of the thumb and median, could be made, but not that of the 

 thumb and tips of the two last fingers. All extension of the carpus 

 on the forearm was impossible. The hand, when left to itself, fell 

 into a state of semiflexion of the carpus on the forearm, with semi- 

 flexion of the fingers ; while the thumb placed itself on the palm of 

 the hand by the flexion of its metacarpal bone and first phalanx, 

 the second phalanx remaining unbent. 



The movements of supination of the forearm and abduction of 

 the carpus were almost entirely paralysed. 



Left side. Right side. 

 Cent. Cent. 



Temperature between roots of thumb and index. 28*0 28*3 



Temperature over dorsum of first phalanx of 



index . . 23*4 267 



Temperature over dorsum of second phalanx of 



index 20'2 257 



Temperature over dorsum of first phalanx of little 



finger 19'0 27*0 



One minute after removal of the pressure the thumb could be 

 flexed at both phalanges into the palm of the hand ; apposition of 

 the thumb and annular finger was possible. The skin over the part 

 supplied by the nerve was rather less numb. 



Two minutes later the carpus could be placed in a straight line 

 with the forearm, but could not be retained in that position. 



