b. that Group IV shows only a slight correlation with the price of grain, since there are included in it many crimes whose causes are not of an economic nature. c. that during the last years of this period the increase of crimes against property was greater than the figures for the price of grain would lead one to suppose; a fact which is explained, according to Dr. Mayr, by the lack of work resulting from the war of secession. The law that crimes against persons increase with the fall of prices is confirmed by these statistics. VI. A. CORNE. [45] According to this author the laws regulating moral phenomena are at present hidden by thick clouds. “We may await with confidence the dissipation of these clouds, when some great principle, about which our observations of detail will group themselves, will appear to us in a flood of light. Everything seems to indicate to me that this master principle is no other than the principle of activity. In fact, the first rudiments of social science have as yet been given us only by political economy, and its sole foundation is the affirmation of human activity. On the other hand, since giving myself up without any preconceptions to this special study of criminality I have been little by little led by a close examination of the facts, to find the general cause of crimes in the absence of this principle of activity. “When we reflect upon this, it appears quite in the natural order of things that the development of criminality, that is to say of the spirit of destruction and dissolution, should manifest itself at the time of the weakening or disappearance of the generative principle of all production and of all society. There is here, then, if I am not deceived, more than a mere coincidence. There is a relationship which deserves to be noted so much the more since it is from the principle of activity that all physical laws also are derived today.” [46] Let us accompany the author to the domain of facts. After having given an exposition of the movement of criminality in France in comparison with that of other countries, he finally takes up the question of etiology. For the crowd, says the author, the criminal is a kind of monster in the midst of society, a monster predestined to crime because of his innate tendencies. Looked at in this way criminality is an individual evil. Corne, on the contrary, believes it to be a social evil. For, however much society may be developed in all respects, it is nevertheless always imperfect, since the ignorance and corruption of morals are great. The author lays stress upon two facts, namely, the corruption of morals in the upper classes, and militarism. Not only does militarism draw after it the ruin of peoples, and develop man’s violent instincts, but it has still other very serious moral consequences, by forcing celibacy upon young men at the passionate age.