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 p. 338. 



Fig. 2. 



A transverse section of a small artery from the same kidney as Fig. . 1. - x '<!15 p. 338. 



Fig. 3. 



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

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

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

 diameter of the vessel. X 215. 



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