num ofa yearling 
porosis in the early stages from the os mag 
Fic. XII.— Demonstrating osteo- 
colt. X,50. Case No. IV. 
A, Cartilage cells, round in form and irregularly grouped. 
B, Cartilage. 
D, Bone. 
D/, Marrow cavities, completely filled with cells and capillaries. 
