Among the advances made which he discusses are:
1. The simplification of many orthopedic problems by the use of radiology, enabling us to recognize features of deformities and diseases which previously had been unfamiliar.
2. The more exact knowledge of the course anatomy of large nerve trunks, contributing to the advance of nerve surgery.
3. The close pursuit of morbid anatomy and histology, teaching us the nature of the muscle and nerve changes in such conditions as Volkmann's ischemic paralysis, congenital torticollis and various bone growths.
4. Bacteriology has thrown light on the problem of anterior poliomyelitis, establishing its contagious nature.
5. By the careful study of normal and abnormal postures, the effect of continued mal-position on the functions of the internal organs has been learned.
6. The nation-wide awakening to the responsibility for the welfare of cripples.
7. The values of recreative and reconstructive surgery and physical (?) treatment of