Show I WHITE MATTER 1 NOT OT GRAY DETERMINES BRAINS BRAIN'S FINENESS I If tho the published synopses sj of or Dr Edward Edward Ed Ed- I Iward II I ward Anthony Anthon Sp Spik nka's L a treaties cA on I human brains just issued b by the thc American Amer Amer- I Amer-I I icon ican Philosophical society oc at it phia aro are accurate tho theory hit hit tto I accepted th that t gray gray rn matter determines deter mines the tho quality of DC the intellect t must I be he modified or oi discarded cd Dr Or finds in the white matter of tho the callo callo- sum stirn the great or 01 bri brido bridie Jo uniting the tho hemispheres of the cerebrum cere cee- brum with n fibers radiating into all nIl it its parts tho time factor th that t determines IM tilt brain brains brain's a fineness and usefulness 1 Idiocy I 3 aud u men mental tal i have t their fla scat eat t tin in iu the tho disease injury or imperfect development do- do of this central Ji But tho the po possession in of a n good sum may be bo accompanied bv lv extraordinary convolutions and amount mount of brain ma ma- Dr finds tho the brn brains ns of totally unskilled men maca 1 lightest and slight heavier those of mechanics clerks business men muon and teachers Highest of all iu ill point of brain weight I arA the thc geniuses of the th pencil brush I and sculptors sculptor's a chisel the mathematicians i I clans cianI scholars and statesmen The I configuration of the brain is determined determined deter deter- mined according to tho work fork it docs does special types being produced in abstract thinkers e experimenters and artists In Irs tim tho dark backward ard and abysm of time time the tho bo Miocene I age to be bc sp specific specific- I tho the ancestors of man nian of the horse and I the tho great mammals began rapidly to I evolve o lar larger er brains which thich were were- lustily Dally about one eighth the time size in proportion pro portion to bulk balk of or hod bod of the thC brains in JD their mo modern ern descendants When in earl carl early paleolithic times the lull in th this s development came caine man had bad relatively a bigger and more educable brain lURin than I II nil RB his animal competitors The Tho slight hl j I increase in its bulk of brain matter in tho the thoI I c civilized races TaCt's as compared with the tho cranial measurements of savages sa docs does not nearly a account count for the mental dis llis lis- lis parities But Dr Jr researches disclose differences in structure and I adaptation of parts which show the way in thi which h evolution is turning I II I |