“Figs. 1 and 3 show the dried pustules remaining in the thickened skin of palm and sole after

“Figs. 1 and 3 show the dried pustules remaining in the thickened skin of palm and sole after the crusts have fallen elsewhere. Fig. 2 shows the superficial desquamation which follows the falling of the crusts, producing rings of partly detached epidermis.“

A Practical Treatise on Smallpox by George Henry Fox, 1903