HUMAN RACIAL BESPONSES 



.080 - 



.070 - 



.060' - 



.050 



.040 



.030 - 



._ .020 



.010 



.000 



3 4 5 



(Tr-Tw)«C 



Figure 2. The relation between tissue insulation and the physiological tempera- 

 ture gradient. 



365 



