120 



BIOLOGY OF DEATH 



males in the years from 5-20. This difference is prob- 

 ably connected, as before, with the greater physiological 

 disturbance of puberty in the female than in the male. 



too 



fe 



O.OI 



RESPIRATORY SYSTEM 



O 5 6O 65 TO 

 AGE 



6O $5 90 95 IOO 



FIG. 29. Diagram showing the specific death rate at each age from breakdown of the 



respiratory system (Group II). 



The lowest point of the respiratory curve falls in the 

 age group 10-15. Between the ages 25-70 there is a very 

 striking difference in the two sexes in respect of specific 



