Rome, political organization, [252]; struggle for liberty, [243]; social conditions, [255]; invasion of the Gauls, [255]; Agrarian laws, [254], [256]; plebeians and patricians, [256]; optimates, [256]; influence on world civilization, [266].

Rousseau, [404].

Savonarola, [380].

Scholastic philosophy, [353].

Schools, cathedral and monastic, [356]; Graeco-Roman, [357].

Science, in Egypt, [182]; in Spain, [306]; nature of, [307], [458]; and democracy, [464], [465].

Scientific classification, [460]; men, [465]; progress, [470]; investigation, trend of, [473].

Scientific methods, [459].

Scientific research, [463].

Semites, [160].