i6 



THE ELEMENTARY TISSUES 



tebral disks, the symphyses and interarticular disks of certain 

 joints, and lining bony grooves for tendons. 



Chemically, cartilage is complex, consisting of a mixture of 



FIG. 13. Elastic fibro-cartilage, 

 Showing cells in capsules and elastic fibers in matrix. (From Yeo after Cadiat.) 



collagen, chondro-mucoid and albuminoid substances. On 

 boiling, it yields a substance known as chondrin, which on 

 cooling turns to gelatin. 



FIG. 14. White fibro-cartilage, 

 Showing cells, a, in capsules and fibrillar matrix, b. (Yeo after Cadiat.) 



(6) Bone. Bone is a dense form of connective tissue con- 

 stituting the skeleton or framework of the body. It serves to 



