Mental Defect, Mal-Nutrition, and 



the Teacher's Appreciation 



of Intelhgence 



A REPLY TO CRITICISMS OF THE MEMOIR ON 



'THE INFLUENCE OF DEFECTIVE PHYSIQUE AND 



UNFAVOURABLE HOME ENVIRONMENT ON THE 



INTELLIGENCE OF SCHOOL CHILDREN ' 



BY 



DAVID HERON, D.Sc. 



LONDON 



DULAU & CO., Ltd., 37 SOHO SQUARE, W. 



1911 



