ABSTRACT
In regard to childhood, as, for example, those of Preyer and Baldwin, have been made upon not more than two or three subjects, children of the investigators. Child psychology can be established only through the method of external observation. The instruments of psychometric research, as applied to pedagogy, have up to the present time been limited to the esthesiometric phase of the study. The taking of the anthropometrical measurements has also an educational side to it, for the pupils, when they leave the 'Children's House'. Aside from the measurements which the physician takes with the ordinary instruments (calipers and metal yard measure), he makes observations upon the children's col-ouring, condition of their muscles, state of their lymphatic glands, the condition of the blood, etc. The method of observation must undoubtedly include the methodical observation of the morphological growth of the pupils.
