We generally forget the conditions of the physical environment in which we live, because supernatural prejudice tells us that the body is a beast which we must forget in order to elevate ourselves into a spiritual life. Manzoni could designate the Middle Ages by the term "dirty." because they neglected the demands of elementary hygiene, and thus of human morality. For where the requirements of our physical body are neglected or offended, there no flower can bloom. The telluric environment has a great influence on our physical activity, by way of our nervous system. We feel differently disposed, according to whether a south or a north wind blows. When Garibaldi was on the Pampas, he observed that his companions were irascible and prone to violent quarrels, when the Pampero blew, and that their behavior changed, when this wind ceased. The great founders of criminal statistics, Quetelet and Guerry, observed that the change of seasons carried with it a change in criminality. Sexual crimes are less frequent in winter than in spring and summer. And with reference to this point I have maintained, and still maintain, that it is due to the combined effects of temperature and social conditions, if crimes against property increase in winter. For lack of employment, the want of food and shelter, intensify the misery and lead to attacks on property. On the other hand, the cold by itself reduces sexual crimes and personal assaults. And those who claim that the longer intercourse between people in summer time has also a social influence, are also partly in the right. The most eloquent fact in this respect was mentioned by Murro, when he pointed out that this change in the frequency of bloody crimes, greater in the warm months than in winter, applied also to prisoners. Statistics show that breach of discipline is most frequent in hot seasons. The social factor does not enter there, because the social life is there the same in winter and in summer. This is, therefore, a practical proof of the influence of climate, and it is re-enforced by the fact that delirium and epilepsy in insane asylums are also more frequent in hot than in cold months. The influence of the telluric factors, then, cannot be denied, and the influence of the social factor intensifies it, as I have already shown by its most drastic and characteristic example, that of want. One can, therefore, understand that a man, whose morality has been shaken by the pressure of increasing want, may be led to commit a crime against property or persons.