PLATE 49. 



i. 5. 



b Cleft of fro-. 



C Frog. 



D Seat of corn. 



B Bars. 



A Sole. 



E Crust or wall. 



b Cleft of frog. 



C Frog. 



D Seat of corn. 



| _ B Bars. 



i A Sole. 



- E Crust or wall. 



Ground surface of the foot. 



