=Atavism.=--All students of natural history have occasionally observed among plants and animals the reappearance of something that belonged to their remote progenitors, but which did not belong to their immediate parents. This tendency for remote ancestral characteristics to reappear after lying dormant for one or more generations, is called atavism. This fact is sometimes observed in the human family. =Examples.=--As a rule, when one child in the home possesses some marked morbid tendency or special gift not possessed by other members of the family, it can be accounted for on the basis of some initial or maternal impression. But this is not always true. A deaf mute may be born in a home and the cause traced to some remote deaf mute ancestor. Consumption, insanity and other diseases may disappear for one or more generations and then reappear. This is a fact recognized by many physicians. Two first cousins from families remarkably free from intemperance were ruined by intemperance. Both seemed powerless from the first indulgence to resist the habit. One was dissipated from childhood, the other did not begin until he was twenty and was a wreck in six brief years. Their grandfather was a periodic drinker. The appetite had slumbered in one generation but broke out in the next. =Love the basis of marriage.=--In the choice of a life companion one should be absolutely sure that his choice is prompted by pure and unselfish love. If love in courtship and marriage is genuine it will have but one idol. Selfish interests and base desires may lead one to admire and worship more than one, but this is not love. =Chastity the basis of genuine love.=--This genuine love that draws young people into beautiful courtship, happy marriage and makes them one is vitally related to the sex nature. Without sexuality this expression of the affectional nature would not be possible. When this God-honored, love-creating nature is converted into sensuality, lust, not love, reigns in courtship and marriage.