Show Growth of Brains In the inferior races the head ceases to grow after 20 years of age In the superior races the head of the intelligent and educated edu-cated man increases in volume until 35 40 and 45 years The skull has reached its maximum development when the bones composing arc welded together so as to render tha sutures invisible Once the sutures are solidified the future growth of the brain is impossible which is said to exBlaiii the insurrnpntifVb1ft difficult ej I a perienced in trying to teach illiterate adults The solidification varies according to the investigating activity of the brain It takes place between the ages of 22 and 25 years in the task worker between 28 and 35 in the middle class manual professions and after 35 in educated persons who prac tise intellectual professions Recent experiments ex-periments in thefemale colleges of Russia prove that womans head though naturally natur-ally smaller than mans is susceptible to similar development under educational treatment The skulls of great thinkers I grow throughout life i The frontal sutures of Pascal Rousseau and others who lived to a ripe old age were found open Comparison of the individual skulls of different races discloses the singular singu-lar and important fact that in the inferior beings the solidification of the sutures begins be-gins in the frontal or intellectual regioa of the brain and terminates in the occipital occi-pital or animal In the case of the civilized civil-ized man on the contrary the solidification solidifica-tion beginning much later in life starts 1n the occipital passes to the parietal bone and thence to the frontal thus giving giv-ing till the last moment the fullest scope to the superior functionsChicago News |