EXPLANATION OF PLATE L 



Fig. 1. 

 A transverse section of the femoral artery of a dog, 24 hours after 

 ligature. High power. See pp. 26-27. (First Series.) 



Fig. 2. 

 A longitudinal section of a 48-hour thrombus in the femoral artery 

 of a dog. Low power. See pp. 25, 35. (First Series.) 



(58) 



