Show adaptability of brain each vocation makes a different call upon the brain and develops i faculties and qualities pecullar peculiar to itself so BO that ah as the various professions Blons trades and specialties multiply the brain takes on now adaptive qualities thus giving 9 greater variety and strength to civilization liza tion as a mass when the world was young the brain of man was very primitive because the demand upon it was largely for self protection and the acquisition of food which called only artly tor foi the development of its lower it its animal part As civilization ad danced however there was a higher call upon the brain and more varied development until today in the highest civilization it has become exceedingly complex success magazine |