VI ] MODIFICATION OF CONNECTIVE TISSUE, ETC. 71 



tions, including the hyaline cartilage and the 

 tissue above it. Stain with picrocarmine and 

 mount in glycerine. Observe 



a. That at the upper surface of the hyaline 

 cartilage, the matrix becomes granular, and 

 the granules are arranged in rows, which then 

 often have less the appearance of rows of 

 granules than of granular fibres ; these may 

 be traced into ordinary fine elastic fibres, 

 which increasing in quantity, form 



b. The elastic cartilage in which the cells 

 stained red with carmine are similar to 

 those of hyaline cartilage ; they have thin 

 clear outlines around them, the capsules, and 

 these are surrounded by a meshwork of elastic 

 fibres stained yellow with picric acid lying in 

 a varying quantity of matrix. This meshwork 

 may have not so much the appearance of 

 distinct elastic fibres, as of a system of thick 

 bars, recalling in general feature parenchy- 

 matous cartilage. 



c. Above (6) ordinary loose connective tissue, 

 note the transition of the elastic cartilage 

 into this by the elongation of the cells and 

 the breaking up of the elastic fibres into 

 loose bundles and the appearance in those 

 of white fibrous tissue staining red. 



