338 THE INVISIBLE WORLD 



are thus born into the world with physically weak 

 constitutions. They start with a poor chance in 

 the race of life, and die young. 



But clean the world of all contagious and infec- 

 tious diseases. What a change! As a rule, all 

 parents become more heathy and vigorous, and 

 beget more healthy and vigorous children. The 

 children naturally live much longer lives, and thus 

 the average length of life is much prolonged. 



In the next place, all people, men and women, 

 being better endowed, would develop stronger 

 bodily and mental powers, be capable of greater 

 endurance, and naturally live longer lives. 



All things considered, therefore, victory over our 

 Invisible Foes means nothing less than doubling 

 once and a half times the average length of life 

 from forty to one hundred years. Men at one hun- 

 dred years are then in the very prime of life. At 

 two hundred, they retain their physical and men- 

 tal powers as well as the best do now at eighty. 

 The " oldest resident " then means a person who 

 looks back upon a life of two hundred twenty-five 

 or two hundred and fifty years. 



The value of this longer life is inconceivably 

 great. How often the man at eighty to-day, in re- 

 viewing his life work, only wishes he could live 

 over his life. How much better he could do. He 

 sees his mistakes, and knows how he could correct 

 them. How he could make better plans, pursue 

 better methods, accomplish infinitely better results. 



But, in that new time the man at one hundred, 



