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Fig. 3.

C, epidermis; D, corium; P, papillæ; S, sweat-gland duct. v, arterial and venous capillaries (superficial, or papillary plexus) of the papillæ. Deep plexus is partly shown at lower margin of the diagram; vs—an intermediate plexus, an outgrowth from the deep plexus, supplying sweat-glands, and giving a loop to hair papilla.

(After Ranvier).