to provide a general scheme for the classification of historical facts, founded on the nature of the conditions and of the manifestations of activity.
I. Material Conditions. (1) Study of the body: A. Anthropology (ethnology), anatomy, and physiology, anomalies and pathological peculiarities. B. Demography (number, sex, age, births, deaths, diseases). (2) Study of the environment: A. Natural geographical environment (orographic configuration, climate, water, soil, flora, and fauna). B. Artificial environment, forestry (cultivation, buildings, roads, implements, &c.).
II. Intellectual Habits (not obligatory). (1) Language (vocabulary, syntax, phonetics, semasiology). Handwriting. (2) Arts: A. Plastic arts (conditions of production, conceptions, methods, works). B. Arts of expression, music, dance, literature. (3) Sciences (conditions of production, methods, results). (4) Philosophy and Morals (conceptions, precepts, actual practice). (5) Religion (beliefs, practices).
III. Material Customs (not obligatory). (1) Material life: A. Food (materials, modes of preparing, stimulants). B.