The Philosophical is the fourth class, with the motto, “Let no one who is ignorant of history enter here.” The walls are decorated with pictures illustrative of arithmetic, geometry, and physics, and connected with this class-room are a chemical laboratory and a dissecting-room. The religious instruction includes hymns, Psalms, an epitome of the New Testament, and a life of Christ. The text-book is called the _Palace of wisdom_; in it the genesis of natural phenomena are described. In mathematics, the pupils learn the rules of proportion; they begin the study of trigonometry; also statics, and instruction on musical instruments. Greek is begun, and the pupils study natural history through Pliny and Ælian. Comenius mentions that he does not consider Greek a difficult study; and he thinks it need cause the pupils no alarm, since an exhaustive knowledge of Greek is not required, and the difficulties of the study will be largely overcome by the use of rational methods of teaching. The fifth class is the Logical. Over the door is the inscription, “Let no one enter who is ignorant of natural philosophy,” and the walls are covered with the rules of logic. The pupils have a Bible manual and a class-book on problems in philosophy. The problems include a survey of things that have been and may be discovered by man; a formal logic explaining the processes of reasoning, and a repertory of such philosophical problems as present themselves to the human mind. In arithmetic, the rules of partnership and allegation are studied; in geometry, mensuration of heights and distances and plane surfaces; in geography, a description of the earth; in astronomy, an account of the heavens; in history, a survey of mechanical inventions. For the formation of a literary style, such historians as Curtius, Cæsar, and Justin are read. The study of Greek is continued, and Isocrates and Plutarch are recommended for reading. Dramatic performances are introduced in the fifth class. Grammar, logic, and metaphysics are represented in conflict, but a reconciliation is finally effected through study. The sixth is the Political class. Its motto, “Let no one enter who cannot reason.” Sallust, Cicero, Virgil, and Horace are read for style; provision is made for verse writing; attention is given to geography and the parts of astronomy dealing with the planets and the laws of the eclipses; the Bible is read through; more advanced topics in arithmetic and geometry are taken up; the special class-book studied deals with human society and the laws of economics; in Greek the pupils read from Thucydides and Hesiod. Dramatic performances are continued, the degeneration and moral downfall of Solomon being rendered.