Syuiptoins. 



945 



curvatures, for instance lordosis in addition to kyphosis, or 

 the scoliotic vertebral column is bent both to the right and 

 to the left (Figs. 158 and 161). 



The deformities in the trunk and extremities may alter 

 the entire body conformation (dwarfism) and naturally in- 

 fluence the motions of the animal, which is clumsy, uncertain, 

 and may reel or stagger in walking even if the bones are not 

 painful. 



The skull bones either show certain changes, like thicken- 

 ing and deformity of the rami of the inferior maxillary, on 

 close observation only, or they are so much altered that their 



Fi-'. 163. RarhHis in a ealf. 



affection forms a prominent symptom of the disease. Some- 

 times early, more often later the respiration l)ecomes sniffling 

 and difficult with occasional attacks of asphyxiation, and as 

 this increases the facial bones Imlge out more and more, so 

 that the head may in the course of 6 to 8 weeks become enor- 

 mously large. The bulging of the bones commences mostly 

 in the maxilla and gradually involves the contiguous bones 

 and the inferior maxilla. The vomer protrudes into the oral 

 cavity which therefore l:)ecomes smaller, so that the ingestion 

 of food is rendered difficult and even impossible (Fig. 164). 



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