Subject Classification - 1 Established in the general order of Matter and Force (Generalia and Physical Sciences) Life (Biology, Ethnology, Medicine, Economic Biology, Domestic Arts) Mind (Philosophy, Religion, Political and Social Science) Record (Language, Literature, Literary forms, History, Geography, Biography) Brown considered this a logical order, or at any rate, according to a progression for which reasons, weak or strong, can be advanced (1914: 11)