LESSON IV. 



HYALINE CARTILAGE. 



1. Snip off a piece of the free edge of any of the 

 thin cartilages projecting from the sternum or 

 shoulder-girdle of a freshly killed young newt 1 . 

 Gently scrape away with a scalpel any tissue 

 attached to it. Mount it in normal saline solu- 

 tion 2 and with a high power note that 

 a. The matrix is studded at tolerably regular 

 intervals with cartilage cells or corpus- 

 cles. 



I). Each corpuscle consists of a spherical or ovoid 

 mass of cell-substance, in which lies a 

 relatively large nucleus. Both of these are 

 fairly clear and transparent, though usually 

 showing a variable number of fine granules. 

 c. Most of the cells entirely fill up the cavities 

 in which they lie. 



1 Instead of this, sections of the head of the humerus or femur of 

 any young animal may be made. 



2 i. e. *6 p.c. aqueous solution of sodium chloride. In this and the 

 following Lessons whenever a tissue is directed to be mounted in 

 normal saline solution it is to be understood that if either fresh 

 aqueous humour, or fresh blood-serum is obtainable, it is to be 

 preferred. 



