The Nature & Development 



OF 



Animal Intelligence 



By 

 WESLEY MILLS, M.A., M.D, D.V.S, F.R.S.C. 



PROFESSOR OF PHYSIOLOGY IN M'GILL UNIVERSITY, MONTREAL, CANADA, 



AUTHOR OF "ANIMAL PHYSIOLOGY," " COMPARATIVE PHYSIOLOGY," 

 "THE DOG IN HEALTH AND IN DISEASE," ETC. 



NEW YORK 

 THE MACMILLAN COMPANY 



MDCCCXCVIII 



