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

HIGHER ORGANISMS. 221what to the side. The cerebellum, or littlebrain, regulating equilibrium becomes moreimportant in size and form, being laid upin transverse furrows. These important advancesindicate a life of much more varied activitythan in the lower orders. This animalwalks, hops, perches on branches by theclutching of its claws, and flies from place toplace. To provide for these varied forms ofactivity, there must be a more detailed arrangementof nerve system, which is clearlyindicated in the complexity of the centralorgan.The next advance introduces to notice thesmaller quadrupeds, known as the rodents, ofwhich the rat, rabbit, and hare may be takenas the most familiar examples. Here we stillhave the smooth surface of the brain, withoutany subdivision and twining into folds such asafterwards appears, but it is somewhat elongatedin shape. An additional element herecomes into view, that is, extra provision foracuteness of smell, in accordance with thewell-known characteristics of the class of animals.Set out in front of the brain are twodistinct lobes, which are the olfactory lobes.Wherever these are so placed in front of the