The teaching in these latter should be conducted, wherever practicable, upon the Socratic method, and every branch of science and of art could be thus explained. The mother unconsciously uses this method in educating or drawing out the first perceptions of infancy and early youth; and the impressions derived from this method of acquiring knowledge are the most lasting, being such as become most absolutely assimilated with the pupil's mind. The teacher would also, at frequent intervals, conduct his class into the fields and woods for the study of botany, entomology, and geology, where Nature would supply in abundance the materials, and the teacher would be the only book. Instruction in the various trades which could be conveniently practised should receive attention, the taste of the pupils being made a guide to selection. Some portion of the teaching which goes on in school should be performed by the pupils, under the supervision of the teacher. No adult can so thoroughly enter into a child's mind as can another child; nor is this the only reason. That is not fully known which can not be thoroughly used and applied, and knowledge can not be applied which its possessor can not himself impart. A perfect illustration of this truth is furnished us in the training of the soldier. Upon nothing, perhaps, have the knowledge and skill of the most powerful intellects been more concentrated than upon the science and art of mutual slaughter; and in establishing the soldiers' drill, an exhaustive analysis of the means by which the desired object was to be attained has been pursued. The men whose intellects have developed that drill, have not been content to treat the soldier as a pupil only. Each recruit has in turn to teach, as well as to learn to practise what he has learned, by drilling others whom he is made temporarily to command, as well as to practise his drill under the command of his officer; for only by such means could the highest degree of efficiency be secured. The reasons which led to the adoption of this principle in the barrack apply equally to the school. This principle of giving and receiving we also see exemplified in Nature. Animals inhale oxygen from the air and return carbonic acid, which serves to build up the structure of the plant, and the latter in its turn gives out oxygen to supply the consumption of animals. Every day--in the middle of the day, in winter, in the summer, early in the morning, or in the evening--gymnastic training on the system of the Swedish anatomist Ling or of the German Turners would form a portion of the curriculum, for which convenient apparatus would be provided. Biography should form an important feature in the course of reading, its subjects being arranged in groups; and the true glory of a Washington, a Bentham, a Stevenson, a Morse, and a Cobden distinguished from the false glare and tinsel of a Louis XIV. and a Marlborough.