Blood is systematically furnished from the heart to all divisions of our bodies. When we go any course from the heart we will find one or more arteries leaving heart. If we go toward the head, we find caroted, cervical and vertebral arteries in pairs, large enough to supply blood abundantly for bone, brain, and muscle. That blood builds all the brain, all the bone, nerves, muscles, glands, membranes, fascia and skin. Then we see wisdom just as much in the venous system, as in the arterial. Thus the arteries supply all demands, and the veins carry away all waste material, with returning blood of veins. We find building and healthy renovation are united in a perpetual effort to construct and sustain purity. In these two are the facts and truths of life and health. If we go to any other part or organ of the body, we find just the same law of supply, arteries first, then renovation, beginning with the veins. The rule of artery and vein is universal in all living beings, and the Osteopath must know that, and abide by its rulings, or he will not succeed as a healer. Place him in open combat with fevers of winter or summer and he saves, or loses, his patients, just in proportion to his ability to sustain the artery to feed, and the veins to purify by taking away the dead substances before they ferment, in the lymphatics and cellular system. He shows just the same stupidity and ignorance of support from arteries and purity by the veins when he fails to cure erysipelas, flux, pneumonia, croup, scarlet fever, diphtheria, measles, mumps, rheumatism, and on to all diseases of climate and seasons. FATALITY OF IGNORANCE. It is ignorance and inattention to the arteries to supply and the veins to carry away all deposits before they form tumors in lungs, abdomen or any part of the system. Thus man's ignorance of how and why the blood renovates and why tumors are formed, has allowed the knife to be found in the belts of so many doctors to-day. On this law Osteopathy has successfully stood and cured more than any school of cures, and has sustained all its diplomates financially and otherwise. I write this article on blood for the student of Osteopathy. I want him to put nature to a test of its merit, and know if it is a law equal to all demands. If not, he is very much and seriously limited when he goes into war with diseases. What is to be understood by "Disease?"[5] [Footnote 5: DISEASE. 1. "Lack of ease. 2. An alteration in the state of the body, or some of its organs, interrupting or disturbing the performance of the vital functions and causing or threatening pain and weakness; malady; affection; illness; sickness; disease; disorder."--Webster's International Dictionary.]