The digestion.--Observe if natural, or painful, and if so, whether upon taking food, or if the pain is delayed; if gas is discharged from the mouth, if the stomach is sour, if the food is heavy and distressing; also observe what kinds of food give dyspepsia, and what seem to be well borne. Of vomiting.--Observe if occasional or constant, if immediately after food, or delayed, if sour or bitter, if preceded by pain or nausea, if it contains any undigested food. Of diarrhoea.--Observe how frequent the discharges, if with pain, and where it is situated, the color, the consistency, if there is any blood or mucus, if it alternates with constipation. Of constipation.--Observe if alternating with diarrhoea, if habitual, the effect of medicine and food; if there are any piles. The menses.--The quantity, if there is any pain, its cessation and reappearance, if any effect upon the mental condition. Of pain.--Observe the character and severity, its location, and any evidence of a cause. Of dropsy.--Observe if it is general or local, if in the chest, face, abdomen, arms, or legs; if there are any varicose veins. Of sleep.--Observe the length of time, if quiet and natural, if restless, if deep or light, if there is great drowsiness or continued wakefulness, and the effects of medicine. Of unconsciousness.--Observe if it comes on slowly or suddenly, if partial or complete, if the patient can be aroused. Of convulsions.--Observe if slight or severe, if of short or long duration, if continued or interrupted, if general or of one side, or of an arm or a leg, or the face, or of a few muscles only. Of the mental condition.--Observe if fixed or changeable, the nature of delusions, illusions, or hallucinations; dangerous attempts or threats toward himself or others; any change in the mental state. Of habits.--Observe if fixed or changeable, how formed or how corrected. Of the general conduct.--Observe the dress, if neat and tidy, or otherwise, private habits, care of personal wants, improvement in conduct, the influence of attendants and other patients, or the influence the patient himself exerts on others. This by no means includes all that it is necessary to observe, but it contains much that is important, and the system, if studied and used practically, will suggest to the observer whatever may require attention.