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).