Porter — The Growth of St. Louis Children. 273 
2, Breadth of head. —Take the greatest breadth of the head between the 
ears wherever it is found. Hold the callipers horizontally and perfectly 
t F. 
face.— Put one point of the callipers in the deepest depression 
on the nose between the eyes (C)—then press the other point against the 
chin and find that point at D where the chin turns backwards. Ask the per- 
son to press his teeth together 
4. Breadth of face.— This is the greatest breadth between the narrow, bony 
ridges felt in front of the ears. The ridges run from the cheek bones to the 
ears. Hold the callipers horizontally and symmetrically, approximately 
at G. 
Position of the Points at which Head Measuremenis are Taken. 
A-B, length of head. Approximately at F, breadth of head. C-D, Height 
of face. Approximately at G, breadth of face.* 
5. Hair line. — This is the height of face from the point of the chin to the 
point where the hair begins to grow above the forehea 
Further information, if desired, may be had by sce uae the Physiolog- 
ical Laboratory of Washington University, 625 Clark a e.f 
w WNSEND PORTER. 
Approved Jan. 4th, 1891. 
E. H. Lone, 
Superintendent. 
Some changes were made in the above instructions during 
the course of the investigations. The tests of acuteness of 
hearing were found impracticable because of the unavoidable 
noise in the schools and were given up after about seven 
thousand pupils had been tested. It was noticed that the 
number possessing less than the normal acuteness of hearing 
was very large, and more than one pupil was found who had 
been punished for inattention, the result of an unsuspected 
* Iam indebted to Dr. Franz Boas for this figure. 
+ Since removed to 1806 Locust street. Dr. Porter’s present address is 
Harvard Medical School, Boston, Mass. 
