The brain as an organ of mind . Gf), g) is proportionately less de-veloped than in Reptiles and Fishes (fig. *30, g). The Cerebral Lobes are large and more or less rounded,though they are flattened at their inner faces, where tneycome into contact with one another (fig. 65). These all-important divisions of the brain are smooth and stilldevoid of convolutions; yet in some birds theie are tracesof a depression, answering to a well-marked fissure (the CuAP. IX.] AND or BIRDS 133 * sylvian) always recognizable in the brain of higherMammals. The cavity within each of the cerebral lobes—answering t
The brain as an organ of mind . Gf), g) is proportionately less de-veloped than in Reptiles and Fishes (fig. *30, g). The Cerebral Lobes are large and more or less rounded,though they are flattened at their inner faces, where tneycome into contact with one another (fig. 65). These all-important divisions of the brain are smooth and stilldevoid of convolutions; yet in some birds theie are tracesof a depression, answering to a well-marked fissure (the CuAP. IX.] AND or BIRDS 133 * sylvian) always recognizable in the brain of higherMammals. The cavity within each of the cerebral lobes—answering to the lateral ventricles of the human brain*—is comparatively large, and projecting from the anteriorand external part of the floor of each of them, there isan eminence generally admitted to correspond to the Corpus Striatum in the brain of Man and Mammalsgenerally. The inner walls of ^le lateral ventricles arethin, and almost in contact with one another. They con-stitute the inner boundaries of the cerebral lobes. Fig.
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Keywords: ., bookcentury1, booksubjectbrain, booksubjectpsychologycomparative
