Franz, Sciisdt/ons followmg Nerve Division. 117 



were jiroiici'ly expressed with the corresponding members of the 

 uninjured hand. These results indicate clearly, I believe, that the 

 motor sensations from the little finger were entirely unappreciated, 

 those of the tlnnnb and forefinger w^ere appreciated in a normal 

 manner or dc^gree, while there w^as a change in appreciation of the 

 movement sensations from the middle and ring fingers. The fact 

 that the movements of the ring finger were sensed as movements 

 does not necessarily imply that movement could be apj)reciated. Such 

 movement sensations may have been due to the movement of the skin 

 covering other fingers and palm, which gave more normal sensations, 

 or they may have been due to movement of tendons or other tissues 

 in the palm or back of the hand. It appears probable to me, how- 

 ever, that souie movement sensation persisted in this finger, or, 

 rather, w^e should say that the nerves conveying the impulses for 

 movement sensations had sufficiently regenerated to enable a sensation 

 to be produced. The results with the middle finger, especially the 

 sideway movements, are extremely suggestive of an improvement 

 in this part of the hand. 



During the days that experiments were carried out, many times 

 the patient reported that light touches, touches with cotton wool 

 or a brush, over hairy parts were different in character than those 

 over other normal parts. The way this was always expressed was 

 that the sensations were stronger, or clearer. From the reports of 

 Head's work, one may understand that there is a rather sharply 

 defined line of separation of the parts sensible to cotton wool from 

 those insensible to the same sort of stimulation. That this is not 

 always so, w^as shown in my experiments. The patient would often 

 feel the stimulus, and then again miss it in certain places, while in 

 neighboring regions the stimulus often failed, but occasionally did 

 produce a sensation. That there is no sharp line dividing the 

 'epicritic' and 'protopathic' areas is shown also by the results of 

 a different sort of stimulation. If, instead of cotton wool or the 

 light brush, we use an instrument that will enable us to give different 

 degrees of stimulation, we find the area insensitive to cotton wool 

 does not give a sensation on stimulation, even with considerable 

 amounts of stimulation. N^eiffliborinc: areas in which there can be 



