PLATE XXII.— COATS OF ARTERIES ALTERED BY DISEASE. 



Fig. 1. 



Artery from a diseased kidney, shewing great irregularity of calibre and degenerated 

 muscular coat. The walls of the vessel have probably completely lost their contractile 

 power. Oil globules and debris are seen in the interior. X 215 x>. 338. 



Fig. 2. 



a triMisverse section of a small artery from the same kidney as Fig. 1. x 215 p. 33S. 



Fig. 3. 



Artery from the peritoneum of a frog, which bad been kept for some time -without 

 food, showing wasting of muscular fibre cells and great diminution in calibre. In its 

 viresent wasted and contracted state, the external areolar coat is many times the 

 diameter of the vessel. X 215. 



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