CALCIFICATION OF CARTILAGE. 



Fin. 127. 



459 



FIG. 128. 



Fig. 127. Horizontal section through the growing cartilage of the diaphysis of 

 the tibia of a seven months' foetus. C c. The cartilage with groups of cells that 

 have undergone proliferation and enlargement ; p p, perichondrium. k. Calcified 

 cartilage, in which the individual groups of cells, and cells, are enclosed in calcare- 

 ous rings ; at k' larger rings, at k" progress of the calcification along the perichon- 

 drium. 150 diameters. 



Fig. 128. Right corner of Fig. 127, more highly magnified, co. Calcified cartilage 

 co' commencement of calcification, p perichondrium. 350 diameters. 



