The plan to be followed in this period of education, will obviously be that indicated by the encyclopædic law of Classification, which forms part of my Theory of Development. Scientific study, whether for the working man or the philosopher, should begin with the inorganic world around us, and then pass to the subject of Man and Society; since our ideas on these two subjects form the basis of our practical action. The first class of studies, as I have stated before, includes four sciences which we may arrange in pairs: Mathematics and Astronomy forming the first pair; Physics and Chemistry the second. To each of these pairs, two years may be given. But as the first ranges over a wide field, and is of greater logical importance, it will require two lectures weekly; whereas, for all the subsequent studies one lecture will be sufficient. Besides, during these two years, the necessities of practical life will not press heavily, and more time may fairly be spent in mental occupation. From the study of inorganic science, the pupil will proceed to Biology: this subject may easily be condensed in the fifth year into a series of forty lectures, without really losing either its philosophic or its popular character. This concludes the introductory part of Education. The student will now co-ordinate all his previous knowledge by the direct study of Sociology, statically and dynamically viewed. On this subject also forty lectures will be given, in which the structure and growth of human societies, especially those of modern times, will be clearly explained. With this foundation we come to the last of the seven years of pupillage, in which the great social purpose of the scheme is at last reached. It will be devoted to a systematic exposition of Moral Science, the principles of which may be now fully understood by the light of the knowledge previously obtained of the World, of Life, and of Humanity. During this course of study, part of the three unoccupied months of each year will be spent in public examinations, to test the degree to which the instruction has been assimilated. The pupils will of their own accord continue their esthetic pursuits, even supposing their natural tastes in this direction not to be encouraged as they ought to be. During the last two years the Latin and Greek languages might be acquired, as an accessory study, which would improve the poetic culture of the student, and be useful to him in the historical and moral questions with which he will then be occupied. For the purposes of Art, Greek is the more useful of the two; but in the second object, that of enabling us to realize our social Filiation, Latin is of even greater importance.