PLATE XXIII. 



FIG. 62. Longitudinal section ol the epiphysis of the 



metatarsal bone of a rabbit, macerated in chromic 

 acid. a. Fatty tissue of the medulla, a'. System of 

 bone trabeeuhe, tin- spaefs between \vliich are nlled up 

 with medullary tissue, ricli in cellular elements. These 

 elements medullary cells are in continuity with the 

 layers of rartilajif cells which have a columnar arrange- 

 ment (6). il. La.t ei-s hen- the cartilage capsules begin 

 to enlarge, previously to transition into the tubular 

 <a\ ities of the layers c, while the cartilage cells germi- 

 nate. The intercellular substance which bouiuls the 

 cai sules is calcHUd. p. 50. (Low power.) 



