Development of the Bones of the Lower Limb. 35 



cartilage, to deposit the bone in the centre, are beautifully 

 seen. 



There is a small centre of ossification at the head, but the 

 lower part of the bone is as yet entirely cartilaginous. The 

 bony centre in the upper epiphysis, as well as the epiphysial 

 end of the shaft, are seen to be extremely vascular. 



B. C. 1. N. 22. 



2. 90. Ossification of Tibia. — Section of the tibia of a child, 

 injected with vermilion — in turpentine — showing the vascularity 

 of the bone and epiphysis. B. C. 1. N. 31. 



2. 91. Development of Tibia and Fibula. — Tibia and fibula 

 of a child — injected and in spirit — showing the periosteum 

 and cartilaginous extremities. B. C. 1. N. 46. 



2. 92. Ossification of Tibia. — Tibia of a child — injected with 

 vermilion, and decalcified to show the vascularity of the forming 

 bone — in spirit. B. C. 1. N. 34. 



2. 93. Ossification of Tibia. — Lower end of a tibia, of the same 

 age as the last — injected and in spirit — showing the epiphyses. 



B. C. 1. K 69. 



2. 94. Ossification of Tibia and Fibula.— Right tibia and 



fibula from the same child as Nos. 2. 75 and 2. 78 were taken. 



G. C. 3542. 

 Presented hj Charles W. Cathcart, F.R.C.S.E., 1893. 



2. 95. Development of Foot. — Right foot of a foetus, between 



