232 



BIOLOGY OF DEATH 



1.000 r= 



NON - CONTROLLED CAUSES OF DEATH 



}00 



o 



o 

 o 



cr 



o 



10 



O.I 



I I I I I I I I I I I I I I I I I I I 



190001 02 03 O4 05 O6 07 03 O9 10 II 12. 13 14- 15 16 17 13 



YEAR 



FIG. 53. Trend of death rates from four causes of death upon which no direct attempt at 



control has been made. 



outstanding fact is that their rates of mortality have de- 

 clined and are declining just as did those in the control- 

 lable group shown in Figure 52. It is of no moment 



