If a hundred men of about the same stature are compared, Davenport1 remarks in an unusually elaborate study of body build and its inheritance, it is seen that they vary greatly in weight. At the same time they vary in form, and especially in bulk. This variation is popularly recognized by the variety of terms applied to build. The slim, gaunt and lanky, the obese, chubby and portly—these and many more designations have been adopted to describe persons of unlike "build." The extremes of such structural make-up of man not infrequently come to the physician for consideration in his professional capacity. He is expected to transform the slender and the corpulent, as the case may be, into a more nearly average type of body build; to eliminate the supposed disadvantages of undersize and the alleged dangers of overweight by the promotion of more nearly ideal form and weight.