Human anatomy, including structure and development and practical considerations . nd complex, and that it receives contributions frou) a nuuii largernumber of and more diverse sources than was formerlv recognized. The observations of !•,. A. Spitzka upon the si/e and sagittal area of the corpus callosumhave conferred additionalinterest upon this struc-ture as a possible indexas to intellectual develop-ment. The examinationof a series of brainswhich included .some frommen of acknowledgedintellectual superiority,demonstrated a corpuscallosum of unusual areaas a constant feature in thebrains oi t
Human anatomy, including structure and development and practical considerations . nd complex, and that it receives contributions frou) a nuuii largernumber of and more diverse sources than was formerlv recognized. The observations of !•,. A. Spitzka upon the si/e and sagittal area of the corpus callosumhave conferred additionalinterest upon this struc-ture as a possible indexas to intellectual develop-ment. The examinationof a series of brainswhich included .some frommen of acknowledgedintellectual superiority,demonstrated a corpuscallosum of unusual areaas a constant feature in thebrains oi the more higiilyendowed i n d i v i d u a 1 , further, that thesize of the corpus callo-suiTi bore a direct rela-tion to the character ofintellectual superioritywhich the individualwas known to possess,the largest commissurebeing found in the brainof a man whose intel-lectual greatness impliedthe exercise of associa-tion paths to an unusualdegree. The later con-clusions of Bean, however,seriously question (consult page 1197) the constancy of the relations above suggested. Tapetuiii Choroid plexus Hippocampus,citt obliquely Fasc. long, inferior Frontal section of right hemisphere, passing just behind spienium of corpus cal-losum ; inferior horn of lateral ventricle is cut obliquely. The anterior commissure consists of a compact cord-like strand, slightlycompressed from before backward and therefore oval in section (Fig. 996),which connects the anterior ends of the temporal lobes, as well as the olfactorybulbs. As it crosses the mid-line, the commissure is placed immediately in frontof the downward arching anterior pillars of the fornix, in the interval betweenwhich it appears as a white transverse ridge on the narrow anterior wall of thethird ventricle (Fig. 979). Its posterior surface is covered with the ventricularependyma, whilst in front it is in intimate relation with the lamina cinerea(page 1130). Laterally it arches backward and downward, the entire commissureformin
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
