INNERVATION OF THE HUMAN SKIN 221 



cold spots and pairs of warmth spots marked " local 

 sign " is found. This Goldscheider showed to be higher 

 for cold than warmth spots. 

 Cold Spots. 



.8 mm. 



Palm 



Cheek, Chin and 

 forehead 



Upper arm 



Back of hand, leg, 

 thigh 



Forearm 



Back, chest, abdo- 

 men 



Warmth Spots. 

 Do. 2 mm. 



0.8 mm. 

 2 mm. 



Do. 5.0 mm. 

 Do. 3 mm. 



3 



mm. 

 mm. 



mm. 



Do. 

 Do. 



4 mm. 

 3 mm. 



Do. 5 mm. 



Thus on the palm of the hand two pairs of cold spots .8 mm. 

 apart are distinguished by this punctiform stimulation, 

 whereas on this surface two pairs of warmth spots are 

 only distinguished when they are 2 mm. apart on the 

 cheek, chin or forehead and cold spots are distinguished 

 when .8 mm. apart on the same surfaces warmth spots 

 when 5 mm. apart. 



Table VI. — Average lowest distances in millimetres on different 

 areas of skin where two points are felt as two or minimal 

 distances from which double sensation is obtained. 



