CHRONIC FOTJNBEH. 



839 



plainly as through the texture of coarse cloth, and its fibre was so 

 weak that it would crumble between the fingers. Fig. 747, also 

 obtained from Prof. Cressy, is another interesting specimen show- 

 ing the upper view of 

 another bone of the 

 same character. Fig. 

 748 is a side view of 

 this bone, taken on an 

 exact scale, showing the 

 remarkable bending up 

 of the edges, and its 

 thinness, it being not 

 over three-quarters of 

 an inch at the pyra- 

 midal process or front 

 of the joint. Fig. 749 

 is a bottom view of the 

 same kind of bone, and 

 was obtained of Dr. 

 Walton of the Colum- 

 bia Veterinary College. 



Being engraved from a photograph, it did not work up so well. 

 Instead of being flat as it appears, the outer edges were bent up- 

 ward over a quarter of an inch, with the edges ragged and broken, 



I include also a specimen 

 showing eflfect of inflamma- 

 tion by the pressure of the 

 toe-calk, and excessive rasp- 

 ino- of the wall. Fig. 750. 

 These remarkable changes 

 of structure in the foot gen- 

 erally, especially in the ped- 

 al-bone, when compared with that in a state of health, we see to 

 be very great, and explain the destructive eft'ect of inflammation 

 when allowed to continue for any length of time. Reference can 

 also be made to the many interesting specimens following the 

 chapter on Navicular-Joint Lameness showing this. Many of 

 these specimens will show not only the navicular but the out>er 

 edge of the pedal-bone to be fractured. 



Fig. 747. — Showing absorption aud change of form 

 in pedal-bone, — the effect of inflammation. 



Fig. 



r48. — Side view of the above, showing 

 bending up of the edges, etc. 



