. The sense of touch in mammals and birds : with special reference to the papillary ridges . Fig. 56.—Azaras Opossum. Didelphys azarce. x 25. Pes. Plantar surface, pad at base of D. 1 through a whorl of papillary ridges. of the corium, and the Drlisenleiste. The various outhnes andgroupings of these structures and especially the two first, aloneconcern the subject of the sense of touch, from the present pointof Fig. 53.—Duck-billed Platypus. —Spiny Ant-eater. EchidnOrnithorhifnchus. x 15. Pes. x 15. Manus.

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Keywords: ., bo, bookcentury1900, bookdecade1900, bookidsenseoftouchinma00kidd