Development of the Bones of the Lower Limb. 33 



2. 77. Ossification of the Lower End of Femur.— Section of 



the lower part of the femur (at birth) — injected with vermilion 

 and in spirit. 



The centre of ossification within the cartilage is left 

 projecting, and is seen to be very vascular. Blood-vessels are 

 seen at one or two places in the substance of the cartilage. 

 The presence of this centre at birth is often used medico-legally 

 as a test of full-term delivery. B C. 1. N. 21. 



2. 78. Ossification of the Lower End of Femur.— Lower 



end of the right femur of a person about 15 years old — 

 macerated and dried — showing the epiphyses well formed, but 

 not yet united to the shaft. 



No. 2. 75 is the upper end of the femur of which this is 

 the lower end. G. C. 3541. 



Presented hy Cnxva.TS.ii W. Cathcart, F.R.C.S.E., 1S93. 



2. 79. Development of Patella.— The patella of a child at 

 birth — in spirit. 



It is entirely cartilaginous. B. C. 1. N. 117. 



2. 80. Development of Patella. — The patella of a child, nine 

 months old — injected and in turpentine. 



It is still cartilaginous. B. C. 1. X. 118. 



2. 81. Development of Patella. — The patella of a child, sixteen 

 months old — injected and in spirit. 



It is still cartilaginous. B. C. 1. X. 119. 



2. 82. Development of Patella. — The patellae of a child two 

 years old — in turpentine. 



They are still cartilaginous. B. C. 1. N". 120. 



