12 INTRODUCTION 



cursory reading of its pages must impress one 

 with what has been done and what can be done in 

 the removal of apparently hopeless disabilities. 



The subject of sex hygiene, although approached 

 only by inference, seems to be dealt with in an 

 intensely practical way, as lectures upon such a 

 subject require most dextrous handling to avoid 

 doing more harm than good. 



There is no intention on the part of the writer 

 to present a medical treatise upon the various 

 nervous affections met with in childhood. He 

 simply directs attention to their most striking 

 symptoms, in order to insure early recognition of 

 the condition. 



The entirely new system of anthropometry is a 

 distinct advantage. It is recognized among med- 

 ical men that actual and physiological age are 

 separate and distinct. Standardizing measure- 

 ments according to "age" would seem to be an 

 anachronism. The plan adopted by the author 

 is a much more rational and usable system. 



The book should commend itself to every lover 

 of children and to every one who believes in and 

 is working for the upbuilding of the race. 



J. Edgar Belville, A.M., M.D. 



Professor Emeritus of Physiology, 



Hahnemann Medical College, Phila. 



