JAMES A. MILLER, JR. 



245 



strated and it was possible to show that the majority of narcotized animals 

 cooled below 20°C could recover from two times the lethal exposure for 



42 38 34 30 26 22 18 14 



Fig. 5. Effect of narcosis upon time of death of neonatal guinea pigs at seven tlifferent 

 body temperatures. Results graphed as percentages of non-narcotized littermate sur- 

 vival times. Data from Miller and Miller, 1957. 



Table 4. Control at normal temperature narcotized, cooled littermate 



* From table 4, Miller and Miller, 1957. 



t Two additional animals died during the subsequent 24 hours. 



littermates at normal body temperature. Table 4 shows 90% immediate 

 recoveries of 19°C animals; 70%, 24-hour recoveries. 



To test whether struggling and shivering during the induction of hypo- 

 thermia influence subsequent resistance to anoxia, five littermate pairs 

 were cooled to aj-jproximately 24°C. One member of each pair was injected 

 with Nembutal before cooling, the other after the desired temperature 



