. The brain as an organ of mind. from specimen in Museum of Royal College of Sur-geons.) F, Frontal Lobe ; O, Occipital Lol)e. Chap. XVIL] THE BRAIN OF QUADRUMANA. 301 Orang, and it was also absent in the young HamburgGorilla. The three principal Fissures already referred to, viz.,the Sylvian, that of Kolando, and the External Perpen-dicular, divide the outer surface of the Hemisphere intofour Lobes, in the manner already described (p. 292) ;and though their relative size is very different in the severalcreatures in which they exist, these Lobes may be considered. Pro. 120.—Brain of Gorilla, 1
. The brain as an organ of mind. from specimen in Museum of Royal College of Sur-geons.) F, Frontal Lobe ; O, Occipital Lol)e. Chap. XVIL] THE BRAIN OF QUADRUMANA. 301 Orang, and it was also absent in the young HamburgGorilla. The three principal Fissures already referred to, viz.,the Sylvian, that of Kolando, and the External Perpen-dicular, divide the outer surface of the Hemisphere intofour Lobes, in the manner already described (p. 292) ;and though their relative size is very different in the severalcreatures in which they exist, these Lobes may be considered. Pro. 120.—Brain of Gorilla, 1 ugitudinal section, inner usijuct. (Bolauand Panseh.)8. cm, Calloso-marginal Iissure ; ./. p, Internal Perpendicular Fissure ; /. c, CalcarineFissure, being the posterior part of the Fissure of the Hippocampus. to represent strictly homologous parts in inferior Monkeys,in higher Apes, and also in the Brain of Man. Concealed by the lips of the Sylvian fissure, and form-ing part of its floor, we may find the small Central Lobe,commonly known as the Island of Eeil. This part be-comes well marked and even complex in Man, and, accord-ing to Flower,* is traceable, except in the diminutiveMarmoset, throughout the Quadrumanous series, thoughit is absent in all other Mammalia. * Trans, of Zoolog. Soc, 1860, vol. v. p. 802 THE BRAIN OF QUADRUMANA. Three other Fissures of secondary importance are easilyrecognizable in each of the great man-like Apes, as wellas in many of the lower forms, viz., the Parallel Fissure,situated parallel with, and posterior to, t
Size: 1965px × 1271px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1, booksubjectbrain, booksubjectpsychologycomparative
