172 



THE STOCK OWNER S ADVISER. 



of the first attack perhaps have partially passed off. In this way 

 all four extremities, one after the other, eventually become dis- 

 eased. On being led out of the stable the animal steps short, 

 flexes his limbs with difficulty and apparently with much pain; 

 the joints are hotter than natural, slightly swollen, and tender 

 when pressed upon. On turning the horse around or moving him 



in a backward direction, 

 a decidedly rigid state 

 of the loins is obser\'ed, 

 and usually pain is 

 evinced b y pressing 

 upon the back. On ex- 

 amining the head, the 

 fitcial region will look 

 round. Each ramus of 

 the lower jaw, upper 

 maxillary and nasal 

 bones are usually en- 

 larged, and pressure 

 upon them causes pain. 

 The mucous membrane 

 of the mouth, the nasal 

 chamber, and chambers 

 of the eyes are paler 

 than natural. 



Osteoporosis, in symp- 

 toms and pathology, is 

 closely related to rheumatoid arthritis and fa.tty degeneration of 

 the bones. The disease is no doubt due to the same cause that pro- 

 duces rheumatism of the joints. The various chemical changes of 

 the bones, termed disease, are no doubt due to one and the same 

 cause. They received their name from chemical changes pre- 

 sented at certain stages of the disease; hence the disease is first 

 rheumatoid arthritis, or rheumatism of the articular joints, and 

 later we have softening of the bone and enlargement of the head, 



Fig. 33— Osteo Porosis, or Big Head. 



