In 1913 a home study course was created by American University in Chicago. The purpose was to teach people about the powerful practice of Chiropractic Therapy and the Science of Spinal Adjustment. The 16 part series explores all aspects of the practice, so that a motivated student could learn the core basics and understand how to restore diseased conditions of the body to perfect health, without the aid of drugs and surgery. Please enjoy the reprinting of this engaging and informative text. We have broken the sixteen volumes into two books: Book One presents the foundations of the body and what is needed to understand the basic connections occuring in the body. It provides details, including images and multiple diagrams. Book Two explores Chiropractic Technique directly and shows the student basic moves and practice.