LECTURE XIV. 
ARTICULAR CARTILAGE.— SYNOVIAL MEMBRANE. 
Having demonstrated that the vessels of synovial 
membrane, both in the foetus and in the adult, pass 
upon the surface of articular cartilage as far as the part 
subjected to friction, I will now endeavour to point out 
in what way the interior of the cartilage is supplied with 
vessels, and I shall in the first place describe a vertical 
section of the upper half of the right radius of a foetus, 
Fig. 117, c, in which, vessels from the periosteum 
may be seen passing into the cartilage immediately 
above its connexion with the shaft, these divide and 
subdivide into numerous branches. The shaft of the 
bone also is injected, but its vessels are not continued 
into the cartilage, the layer of bone upon which the 
cartilage is situated, termed by Mr. Toynbee the non- 
