48 ' HISTOLOGY. 



sition of salts of lime in the tissues. These salts are 

 usually deposited in cartilage, and then it is called 

 bone. Dentine is a variety of bone, and .will be dis- 

 cussed more fully when we come to the subject of the 

 teeth. 



No. 26. Make a preparation of cartilage 

 from the end of bone in the fresh state. 



1. Take a sharp knife and cut a piece of cartilage 

 from the end of a long bone and section. 



2. Mount in salt solution. 



3. Stain. 



4. Study, draw and note. 



Look for the following: matrix, cells, capsule, lacu- 

 nae and perichondrium. 



Exercise No. 27. Examine the L. $. of bone given 

 you. 



Look for the following: Haversian system, Haver- 

 sian canal, lacunae, bone cell and canaliculi. 



Exercise No. 28. Examine the T. S. section of the 

 bone given you. 



Look for the same as you did in the previous exer- 

 cise. Make drawings in both cases ; note and study. 



Exercise No. 29. Examine the cuts in your text and 

 make a. draining of all you see. 



