Ribot says: "Every work on insanity is a plea for heredity." Maudsley says: "More than one-fourth and less than one-half of all insanity is heredity." Riddell says: "Of the great causes of insanity, alcoholism is perhaps the greatest, while morbid heredity ranks next. Insanity is largely the result of degeneracy. Most persons who become mentally deranged are the offspring of neurotic, drunken, insane or feeble-minded parents." While it by no means follows that one must manifest traits of insanity or mental disturbance simply because one of his parents suffered from a like trouble--and we believe that many a one has frightened himself into those conditions by pure auto-suggestion inspired by a one-sided belief in heredity--still it is unquestionably true that a fair mind must concede that wisdom and a proper sense of right and justice would require that parents of unsound mental tendencies should not be permitted to bring into the world children who might inherit a tendency toward a like, or worse, condition. The Eugenists also have called the attention of the thinking public to the danger of deaf-and-dumb persons transmitting their condition to their offspring. Of this Dr. Saleeby says: "The condition known as deaf-mutism is congenital or due to innate defect in about one-half of all the cases in Great Britain." Dr. Love says: "In every institution, examples may be found of deaf-mute children who have had one or two deaf parents or grandparents, and of two or more deaf-mute children belonging to one family." A case is noted in England where a deaf-and-dumb man having been killed by an accident, his relatives could not identify the body, as the wife and sister were blind, deaf-and-dumb, and the four children were deaf-and-dumb. The man and his wife were both deaf-and-dumb when they were married, the wife being also blind. Perhaps no subject has aroused the active Eugenists to a greater pitch of indignation than the ascertained results of the effect upon offspring of parents addicted to the over-indulgence in alcohol. It is known by the records that a large number of cases of feeble-mindedness and actual insanity are due to inebriety of parents, and often of grandparents, or ancestors for several generations. Epilepsy, idiocy, and criminality are also traceable in many cases to drunkenness of parents. Dr. Saleeby, moved by indignation by the ascertained results of the investigations of the Eugenists, has said: "Parenthood must be forbidden to the dipsomaniac, the chronic inebriate, or the drunkard, whether male or female."