LESSON XL 



FIBRO-CARTILAGE. ELASTIC CARTILAGE. 

 BONE. TEETH. 



1. Fibro-cartilage. Sections of semi-lunar carti- 

 lage of knee joint of dog (picric acid ; cut frozen) cut 

 parallel with the mass of the fibres. Stain one section 

 with picrocarmine, and another with haematoxylin ; 

 mount together in glycerine. Note 



The bundles of white fibrous tissue. 



The rather large cartilage cells lying here and there 

 between the bundles of fibres, and usually in rows; 

 each is surrounded by a capsule consisting of a small 

 amount of hyaline cartilage. 



2. Sections of inter-vertebral disc with adjoining faces of 

 the vertebrae, cut at right angles to the faces of the disc. Stain 

 with hsematoxylin or picrocarmine. Note 



The intervertebral disc, consisting partly of nbro-cartilage, 

 partly of ligamentous tissue. The bundles cross, chiefly in two 

 directions, at right angles to and parallel to, the faces of the disc. 



The nbro-cartilage passing on the faces of the disc either into 

 a thin layer of hyaline cartilage or directly into the decalcified 

 bone, and on its surface into fibrous connective tissue. 

 L. G 



