the object which we are to subdue, instead of being an animal, is a man like ourselves, as in single combat, we have exercise both of body and mind pushed to its highest power. We have then to oppose an intelligence which is equal to our own, and no longer the intelligence of an unreasoning animal. Single combat is the truly chivalrous exercise; and this also, as in the old chivalry time, may be combined with horsemanship. In single combat we find also a qualitative distinction, and this of three kinds: (_a_) boxing and wrestling, (_b_) fighting with canes or clubs, and (_c_) rapier and sword fencing. The Greeks carried wrestling to its highest pitch of excellence. Among the British, a nation of sailors, boxing is still retained as a national custom. Fencing with a cane or stick is much in use among the French artisan class. The cane is a sort of refined club. When the sword or rapier makes its appearance, we come to mortal combat. The southern European excels in the use of the rapier; the Germans in that of the sword. The appearance of the pistol marks the degeneracy of the art of single combat, as it makes the weak man equal to the strong, and there is therefore no more incentive to train the body to strength in order to overcome an enemy. (The trained intelligence, the quick eye, the steady hand, the wary thought to perceive and to take advantage of an opportunity——these are the qualities which the invention of gunpowder set up above strength and brute force. The Greek nation, and we may say Greek mythology and art, would have been impossible with gunpowder; the American nation impossible without it.) THIRD CHAPTER. _Sexual Education._ [This chapter is designed for parents rather than for teachers, and is hence not paraphrased here. A few observations are, however, in place.] Great care is necessary at the period of youth that a rational system of food and exercise be maintained. But the general fault is in the omission of this care in preceding years. One cannot neglect due precautions for many years, and then hope to repair the damage caused, by extreme care for one or two years.