Plate 09. Syphilis.

I. Gummata of the forearm.
II. Onychia of thumb and forefinger, in the form of mucous patches affecting the matrix of the nails.
III. Syphilitic ulceration of the tongue.
IV. Syphilitic ulcer of the soft palate.

This image is from Syphilis in Thomas' Eclectic Practice of Medicine.