It has been claimed that what we call vital force is electricity and magnetism, and that these forces are manufactured in the human body. This, however, is but a partial statement of the truth. It is true that vital force manifests in the body as electricity and magnetism, but life or vital force itself is not generated in the system. Life is a primary force; it is the source of all activity animating the universe. From this primary force other, secondary forces are derived, such as electricity, magnetism, mind force, nerve and muscle force, etc. These secondary, derived forces cannot be changed back into vital force in the human organism. Nothing can give life but LIFE itself. When the physical body is dead, as we call it, the life which left it is active in the spiritual body. It is independent of the physical organism just as electricity is independent of the incandescent bulb in which it manifests as light. After this digression we shall return to our study of the cause and development of acid diseases. Nearly every disease originating in the human body is due to or accompanied by the excessive formation of different kinds of acids in the system, the most important of which are uric, carbonic, sulphuric, phosphoric and oxalic acids. These, together with xanthines, poisonous alkaloids and ptomaines, are formed during the processes of protein and starch digestion and in the breaking down and decay of cells and tissues. Of these different waste products, uric acid causes probably the most trouble in the organism. The majority of diseases arising within the human body are due to its erratic behavior. Together with oxalic acid, it is responsible for arteriosclerosis, arthritic rheumatism and the formation of calculi. Dr. Haig of London has done excellent work in the investigation of uric-acid poisoning, but he becomes one-sided when he makes uric acid the scapegoat for all disease conditions originating in the organism. In his philosophy of disease he fails to take into consideration the effects of other acids and systemic poisons. For instance, he does not mention the fact that carbonic acid is produced in the system somewhat similarly to the formation of coal gas in the furnace; and that its accumulation prevents the entrance of oxygen into the cells and tissues, thus causing asphyxiation or oxygen starvation, which manifests in the symptoms of anemia and tuberculosis.