H-3 DEPARTMENT OF APPLIED MATHEMATICS 

 UNIVERSITY COLLEGE, LONDON 



bluest ions of the T^ay and of the Fray 



. No. II 



Mental Defect, Mal=Nutrition, and 



the Teacher's Appreciation 



of Intelligence 



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 



Price One Shilling net 



