What a man of forty-five ought to know

HUMAN life seems to be divided into periods of about seven years. At seven years of age, the infant enters upon childhood; at fourteen, the boy enters upon manhood; at twenty-one, he enters upon the beginnings of the period of maturity. At the seventh period of seven years, or at forty-nine years of age, most men enter upon what has been aptly called " the youth of old age," and at the end of ten of these periods of seven years, or at " three-score years and ten," the Bible sets the allotted period of human life. The length of these periods is affected somewhat by the heredity, health, vitality and physical endurance of the individual. There are some who lack in physical endurance, or who mature early in life, and with such these periods may be somewhat shortened, while upon the other hand there are some whose splendid heredity, physical endowments, and temperate mode of life secure for them some lengthening of these periods. But, as we have said, these are about the average or normal periods of human life.