II 



SENSIBILITY OF THK INTERNAL ORGANS 



are often It-It, but these are m>i so much true pain as ;m obscure 

 feeling of lit-avincss or strain, while true, sharp, stabl)ing pain is 

 projected to the surface of the body. According to Head, this 

 false localisation is an effect of the low sensibility to pain of the 

 internal organs and tissues, and of the connection between these 



l-'i';. 2i;.l Marram of zones and areas of hypi-i-d-i'M.-!, after the clinical researches 



Explanation on p. 68. 



and the nerve-centres of the much more sensitive external tissues. 

 Head's law of the localisation of pain runs as follows : 



" When a painful stimulus is applied to a part of low sensi- 

 bility in close central connection with a part of much greater 

 sensibility, the pain produced is felt in the part of higher sensi- 

 bility rather than in the part of lower sensibility to which the 

 stimulus was actually applied." * 



1 Brain, 1893, vol. xvi. p. 127. 



