Fic. XVIII. — Sections of foot from the same case as Fig. XVII. 
II. 
Cross section of os suffraginis near its superior end. 
O.S., Os suffraginis. 
Ex., Exostosis on os suffraginis (ringbone), tending to envelop the three flexor tendons. 
F.C., Flexor of the corone. F.P., Flexor of the os pedis. F.S., Flexor of the suffra- 
ginis (suspensory ligament). 
Longitudinal section of the left half of fore foot. O.S., Os suffraginis. R.B., Ring- 
bone on os suffraginis. O.C., Os corona. S.B., Sidebone. Ex.N., Exostosis on 
navicular bone. O,N., Navicular bone. O. N. C., Articular cartilage of navicular 
bone. O.P., Os pedis. A. and B., Arteries. 
