During the last quarter century millions of Americans through personal experience have become staunch adherents to one or more of these systems of treatment. This fact has been instrumental in directing the attention of numerous sincere and scientific investigators to the spinal column with its associated structures as a mechanism through which to apply therapeutic measures. It therefore behooves every health seeker to acquaint himself with the theories and claims of these various systems of manipulative treatment. Osteopathy The autobiography of Dr. A. T. Still contains the following interesting statement: "In the year 1874 I proclaimed that a disturbed artery marked the beginning to an hour and a minute when disease began to sow its seeds of destruction in the human body. That in no case could it be done without a broken or suspended current of arterial blood, which by Nature was intended to supply and nourish all nerves, ligaments, muscles, skin, bones and the artery itself. The rule of the artery must be absolute, universal and unobstructed or disease will be the result. I proclaimed then and there that all nerves depend wholly on the arterial system for their qualities such as sensation, nutrition and motion, even though by the law of reciprocity they furnish force, nutrition and motion to the artery itself." It may be argued that as early as 1805 the Ling System of Swedish Movement was founded on the same principle, namely, "permanent health through perfect circulation." The evidence at hand, however, strongly suggests that the founder of osteopathy arrived at his conclusions independently. The further claims of Dr. Still as to the cause and cure of disease are briefly as follows: Partial displacements of any of the various bones of the body exert pressure on neighboring blood vessels, thereby interfering with the circulation to the corresponding organs. These displacements, called "bony lesions," are best "reduced" by manipulations called osteopathic "moves." Chiropractic In 1895, Dr. D. D. Palmer put forth the following claims as to the cause and cure of diseases: Sprains of the spine result in partial displacement of one or more of the vertebrae which go to make up the spinal column, thus exerting pressure on the neighboring nerves. This shuts off the vitality of the organs supplied by the affected nerves, hence disease results. These displacements, called "vertebral subluxations," are best "adjusted" by means of manipulations in the form of chiropractic "thrusts."