There are eight such methods: by pulse, by breathing, by the composition of the chest, by the hair on the chest, by the way the body feels to the touch, by the qualities of character, by the strength or weakness of the body, and also by the person’s mood. As for the pulse, the speed, large size and frequency of the pulse indicate greater warmth of the heart, and the opposite qualities indicate its coldness. The softness of the pulse indicates the moisture of the heart, and its hardness indicates dryness. The strength and evenness of the pulse, as well as the orderliness of its irregularities, indicate a healthy heart, and the opposite qualities indicate a state opposite to health. Large, fast, frequent and hot breathing indicates great warmth of the heart, and the opposite qualities indicate its coldness.
If the chest is wide and capacious, but this does not occur due to the large amount of brain, and the abundance of the brain is indicated by the significant size of the head, which determines the abundance of the brain, which in turn determines the large size of the spinal cord, which is the cause of the large size of the vertebrae, on which the large size of the growing of them ribs, and if, on the contrary, the head is small or medium, and the pulse is strong, then all this indicates the warmth of the heart. Opposite qualities, if they are not due to the small size of the head, indicate a coldness of heart. The abundance of hair growing on the chest, especially curly, indicates the warmth of the heart, and the bareness of the chest and the scarcity of hair on it indicates its coldness due to the absence of a cause generating smoke, or dryness due to the lack of smoke matter, if this is not very opposed the moisture content of the body's nature, the usual qualities of air and terrain, and age.
The warmth of the whole body indicates greater warmth of the heart, unless it is counteracted by the cooling effects of the cold spleen and liver. Coldness of the body speaks of the coldness of the nature of the heart, if the liver does not provide any counteraction. The softness of the body indicates the wetness of the nature of the heart, if, at least to the slightest extent, the liver does not counteract, and the hardness of the body indicates a dry heart, if the liver does not counteract. Putrid fevers with a healthy liver indicate warmth and moisture in the heart. As for character, natural anger, which is not usual for a given person, as well as insolence, courage and ease of movements indicate warmth of heart, and the opposite qualities, if they do not arise from bad thoughts or habits, indicate his coldness.
The strength of the body indicates the strength of the heart, and the weakness of the body, if not due to damage to the brain and nerves, indicates its weakness. Weakness of the heart indicates a disorder of his nature, and strength indicates the balance of his natural nature, that is, the fact that the innate warmth and animal pneuma in him are abundant and, moreover, they do not burn or smoke, but, on the contrary, are light and pure. A collateral disorder of the nature of the heart from heat is indicated by intense burning of the body and mental irritation; sometimes it causes breathing damage. As for moods, thoughts inclined towards joy, hope and hope for the good indicate the strength of the heart and its balance in relation to warmth and moisture. Thoughts aimed at causing offense and grief testify to the warmth of the heart. The tendency to fear and grieve indicates a coldness and dryness of heart.
Regarding the various phenomena felt in the heart itself, such as, for example, the burning that arises in it or the interruptions felt in it, it should be said that some of them themselves indicate the state of his nature, such as burning, for example, while others indicate this only if there are accompanying signs, such as interruptions. Interruptions accompany all types of heart weakness and disorders of its nature and do not indicate any particular heart disease. Sometimes interruptions become more frequent due to the great sensitivity of the heart and arise from the most insignificant thought, from steam or similar influences reaching the heart. Heart diseases often occur with the involvement of other organs, especially the head and the mouth of the stomach. Diseases of the brain that cause melancholy and epilepsy are not free from the complicity of the heart. Sometimes matter rushing from tumors passes into the heart, for example, during pleurisy and pneumonia, and turns out to be the cause of great danger and even death. When there is a lack of juices in comparison with the required amount, it primarily harms the heart, and its nature changes. When pure warmth or pure cold penetrates the heart, the patient dies. I have often seen that someone struck by cold dies while talking; sometimes he dies in perspiration, and sometimes without perspiration.