golden-haired Scandinavian girl has married a very swarthy Jew, the Scandinavian side of the family may say till they are blue in the face that the baby has his mother's nose or his mother's eyes. They can never be certain the black-haired Bedouin is not present in every feature, in every inch. In the person of the baby he may have gently pulled his wife's nose. In the person of the baby he may have partly blacked his wife's eyes.
Those are the three first facts of heredity. That it exists; that it is subtle and made of a million elements; that it is simple, and cannot be unmade into those elements. To summarise: you know there is wine in the soup. You do not know how many wines there are in the soup, because you do not know how many wines there are in the world. And you never will know, because all chemists, all cooks, and all common-sense people tell you that the soup is of such a sort that it can never be chemically analysed. That is a perfectly fair parallel to the hereditary element in the human soul. There are many ways in which one can feel that there is wine in the soup, as in suddenly tasting a wine specially favoured; that corresponds to seeing suddenly flash on a young face the image of some ancestor you have known. But even then the taster cannot be certain he is not tasting one familiar wine among many unfamiliar ones or seeing one known ancestor among a million unknown ancestors. Another way is to get drunk on the soup, which corresponds to the case of those
