Measurements of body-surface were made in all cases. It is greatly to the credit of D. and E. F. Du Bois that their methods for body-surface measurements have been so carefully outlined that relatively little training is necessary to secure accurate measurements of the dimensions required. These measurements were made frequently for all of our subjects, not only to find the exact body-surface, but also to indicate a typical series of representative circumferences that could be studied with a view to noting the diminution in volume of the body as the weight loss progressed. The heights were measured carefully on a standard scale. Both the Du Bois measurements and the records of the heights were made independently by two observers and every reading of the tape or measuring-rod was checked.