show that th< 



tion exerted upon the 1 



tain lently, 



right angles I igs. [67 to 1 ; 



Almost nowhere in the I •■ 

 by articular cartilage or b; 

 ing a joint, as in the extremities of m 

 by periosteum, a fibrou 

 portanee for the nourishmenl 

 hard but elastic, and consi 

 different bones, beu 

 to several millimeters. For 

 and bone-marro\ 



The bone- marrow 

 eaUy fat tissue, and tnd in the m< 



in young individuals these 

 also situated in the finer medullar 



The vessels nourishing the bon< 

 but they also occur in the bony ti« 

 in the periosteum, the bony tissue ha\' 

 nor vessels. 



In certain regions of the human 

 are formed bv cartilage, as at thi anl 

 and flexible, it plays quiu -it fun. 



enveloped bv a connect iw 



With reference to the developm 



of the bones are laid down in can: 

 in cartii. J in contrast with tl 



membranous bon. 

 bones. (For a minute d 

 Atlases.") 



During the transformation of th< 

 slowly and lasts very long, usually n 

 appear in the cartilaginous j>orti 

 case, multiple, and sometimes th< 

 sternum). Usually, however, 

 the diaphysial center, ap] 

 velops at least one and fi 

 not only appear at a much later 

 tcr for the diaphysis by a la- 

 disappears and the bone becu::.. 



