PH YSICA L DE TERIORA TION. 



had a longer expectancy of life, namely, 41*35 years. 

 While, however, the expectancy at birth during 

 childhood and youth has been increased, the follow- 

 ing table (extracted from their tables) will show that 

 the expectancy during manhood has diminished ; that 

 is to say, men are either not so strong, or their sur- 

 rounding conditions are less favourable than they 

 were, and they cannot expect to live for so long a 

 period. The details of this table are as follows : 



MEAN AFTER-EXPECTATION OF LIFE. 



Physical Degeneration of the Race already indicated. 



It seems improbable that the short expectancy of 

 middle age can be due to modern overstrain, for 



