. The sense of touch in mammals and birds : with special reference to the papillary ridges . Fig. 77.—Great Ant-eater. Myrme-cophaga juhata. x 15. Pes. Plan-tar surface fibular border, at baseof D. 5 skin here covered withthick scales, section longitudinal. Fig. 78.—Cape Hyrax. Hyraxca-pensis. X 15. Pes. Plantar sur-face, pad on fibular side, skinsmooth, section Fig. 79. -Common Squirrel. Sciurus ni//.,:,-Palmar sm-face, transverse -Epidermis nearly smooth, sudori-Papillae of the corium low and Xerus capensis (Fig. 81).-parous ducts well shown,rudimentary. Arctomys marmott
. The sense of touch in mammals and birds : with special reference to the papillary ridges . Fig. 77.—Great Ant-eater. Myrme-cophaga juhata. x 15. Pes. Plan-tar surface fibular border, at baseof D. 5 skin here covered withthick scales, section longitudinal. Fig. 78.—Cape Hyrax. Hyraxca-pensis. X 15. Pes. Plantar sur-face, pad on fibular side, skinsmooth, section Fig. 79. -Common Squirrel. Sciurus ni//.,:,-Palmar sm-face, transverse -Epidermis nearly smooth, sudori-Papillae of the corium low and Xerus capensis (Fig. 81).-parous ducts well shown,rudimentary. Arctomys marmotta (Fig. 82).—Both epidermis and papillarylayer of the corium are little developed. Mus decumanus (Fig. 83).—Section from eminence on plantarsurface of hind foot, shows epidermis simple and papillae of thecorium pointed and closely-set. 94 THE 8ENSE OF TOUCH IN ANIMALS Myopotamus coypu (Fig. 84).—Section through thick epi-dermis scales, papillae of the corium irregular, mostly low, a fewpointed. Hystrix cristatus (Fig. 85).—Epidermis smooth and verysimple, papillae of the corium low and broad, extending into theepidermis only a short distance and separated by thick Driisen-leisten. Erethizon dorsatus (Fig. 86).—Section through large nodules
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