The Relation of Science and Religion.pdf - Online Christian Library

226 SCIENCE AND RELIGION.two deeply cut hollows, the brain is markedoff into four separate areas superficially, afront and a rear lobe; and two central lobes,the one upper and the other under. Besidesthis there is a concealed and isolated lobe,described on account of its situation as anisland, which is covered from view by theoverlapping of the two sides of the Sylvianfissure. Such is a description in outline ofthe configuration of the human brain, to whichmust be added the statement that each lobe isfilled in with its own special arrangement ofconvolutions, each one having at least threewell defined lines of convolution. Each of thehemispheres is similarly arranged, though notby any means quite identical in disposal ofconvolutions, yet the general description nowgiven is strictly applicable to both. The twohemispheres, connected mainly with the ramificationof nerve fibre running to the oppositesides of the body, are united together a considerableway down by a transverse band ofnerve fibres, which at once unite the two intoone organ, and make the union so effected aliving efficient union by carrying a multitudeof lines of conlmunication from the one sideto the other. Just below this, in the interior