116 



BIOLOGY OF DEATH 



and 143 female. This is the only year of life in which the 

 total force of mortality is heavier among females than 

 males. From that time on to the end of the span of life, 



O 5 JO 



<? 25 ^O 35 4O 45 5O 35 6Q 65 7O 75 &O <55 SO 95 iOO 



AGL 



FIQ. 27. Diagram showing the specific death rate at each age for deaths from all causes 



taken together. 



the female curve lies, by greater or less amounts, below 

 the male curve. After the heavy mortality of early 

 infancy, the curve drops in almost a straight line to the 



