PHYSIC A L DE TERIORA TION. 



groups only, the first group of persons (males) 

 younger, and the second group of persons older than 

 35 years. 



DEATH-RATE OF MALES PER 1000 LIVING. 



Group I. shows the very steady diminution in the 

 death-rate of the earlier years of life, and similar 

 results are also brought out by a corresponding table 

 showing the death-rates among females. 



Group II. showing the death-rates of individuals 

 above 35 years of age, at first sight seems to give no 

 very satisfactory predications of either increase or 

 decrease of mortality, indeed the last period indi- 

 cates a very decided fall in the mortality. We have, 

 however, to remember that climatic influences are 

 variable, and that certain groups of years are especi- 

 ally healthy and others inimical to well-being. That 

 the last period is a very healthy one is indicated by 

 the excessive fall seen in Group L, and by a corres- 

 ponding fall in the number of deaths of females. 

 These climatic variations may be assumed to influ- 

 ence the numbers of Group II. more than those of 

 Group I. ; indeed, on reference to the details given in 



