In the main, lax habits grow from surroundings and association. The tendency of all human beings is to revert to the primal. It is only association that keeps the individual units up to the tension that civilization expects and demands. Every community shows many examples of this inevitable tendency. Nature is constant; civilization spasmodic. Especially with sex relations, conditions are the chief factor. Nature knows little or nothing of the regulations fixed by society and custom. Poverty and wretchedness reach outward through a community and by association between the old and the young pass down the generations. Nothing but a complete change of environment can counteract the inevitable tendency. When social classes arise and the cleavage is clear and established, no great effort is made by the superior members to aid the inferior. In fact they are almost invariably left to themselves. Poverty and wretchedness are not transmitted in the blood, but in the environment. It is not many years since physicians and communities believed that tuberculosis was inherited. In all communities there were instances of this dread disease spreading out through families and down the generations. It required the sacrifice of many lives and the careful investigation of scientists to discover that tuberculosis was the result of germs, generally accompanied by an impoverished system. These germs were transferred by close association and lack of sanitary conditions. It is as easy to transmit shiftlessness, idleness and lax habits as disease. Dugdale's figures of delinquency in the Jukes family are doubtless much too high. A large percentage of facts was gained from gossip and hearsay about those long since dead. The details show that many crimes charged were not even proved, others were evidently not crimes, and in any small community suspicion would rest upon a member of this family who was accused. Then too, the poor in court and out have a hard time defending themselves. They are frequently convicted when accused. The evidence in regard to the subnormal and defective is still less satisfactory. Without close examination and thorough tests, illiteracy generally passes as subnormality. Very few of the subjects were submitted to a careful test. It is at least probable that this family was not much different from the other families who lived in like circumstances in the community. Dugdale's original examination covered 709 cases out of about 1200 that were supposed to be living at the time. Of this number, 180 are put down as having received institutional and outdoor relief. The criminals and offenders are put down at 140. Habitual thieves convicted and unconvicted are listed at 60. Common prostitutes are put down at 50.