About air, water, places: Hippocratic bioclimatology and climatopathology, meteorobiology and meteoropathology.
About humors: The humors of the human body, their movements and their effects on the organism. About winds: Interpretation of diseases based on the air circulating within the human body. About crises: The change of a serious illness, which leads either to the treatment of the patient or to his death.
About critical days: The critical days of diseases, when their tendencies manifest either for the better or for the worse.
About vision: Vision and eyes. General and specific observations.