Irregularities and diseases of the teeth, p. 12

\protrusion of the central incisors due to abnormal development of the premaxillary bone (Fig. 7). Similar deformity of the lower jaw (Fig. 8). Page 12, from 'Irregularities and diseases of the teeth' by Henry Sewill, 1870. Reprinted from the Lancet and British Journal of Dental Science.