NERVOUS PATHWAYS 
Col /K g /H DOG 700 
9 
-+ normal 
>•• spinal cord 
severed of Th1 
level 
1 /*.'• 
-30 -20 -10 10 ^ .20 30 40 
Ambient Temp. 
Figure 1. Heat production of dogs plotted against ambient 
temperature. The normal dog and dog after spinal cord had been 
severed at thoracic one level. 
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