CHAPTER 'X. 



JNON-INFLAMMATORY DISEASES OP BOyES. 



* 



KIriCKTS — ilOLLITIES OSSIUM — OSTEO-POROSIS FBAGILITUS OSSIUM — 



OiSTEO-SAIlCOMA — EFFECTS OF MERCURIAL POISONING ON BONES. 



niCJCETS. 



The teniis "rickets" find " rachitis " are used to denote an 

 iinnalnrnl softness of the osseous systeji in young animals,' 

 and is referalile to disordered nixtrition of the osseous tissue;, 

 iUifi\ct,jta'the mal-assimilation and • uou-developiuent of the 



materials neces- 

 sary to the forma- 

 ^, tion of Lone. 



Rickets may ha. 

 witnessed in foals,', 

 calves, and younjj; 

 dogs, more especi- 

 ally young spaniels . 

 and pointers. In. 

 foals and calves the 

 metacarpal bonea* 

 {are those ■which. 

 ,;3oonest bend; iu 

 ,dogs, the lower 

 third of the huuie- 

 Irus ; giving: to tlie.- 

 'dog a dwarf- like 

 appearance : he 

 Fig. 29. stands with lug- 



fore legs wide apai-t, and walks with a peculiar rolling gait, 

 throwing the weight of his bodj from one limb ta another im 



I 



