348 Trans. Acad. Sci. of St. Louis. 
V. The physical examination of each applicant for entrance 
to any grade. 
These data permit the enforcement of the following regula- 
tion: That no pupil whose physical development varies more 
than +d from the weight, etc., of the mean pupil of his 
height in a class which his mental output would otherwise 
entitle him to enter, shall be admitted to that class, unless 
with the approval of a medical expert, if possible a regularly 
appointed school physician, who shall testify that the pupil’s 
strength will be equal to the strain. 
