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JAMES ROLLIN SLONAKER 



also shown. In figure 75, plate 12, this artery is seen in a sec- 

 tion a little farther on where the connection between its inner 

 and external portions is not shown. When the artery reaches 

 the base of the pecten it divides into two branches which extend 

 in opposite directions along the base (fig. 34, PA). These give 



Fig. 35 Enlarged semidiagrammsftic drawing from a dissection of the pecten 

 to show the arrangement of the arteries, A, and veins, F, and their connecting 

 capillaries, in the pecten. The crest of the folds at the free margin of the pecten 

 has been cut at C to enable the folds to be spread out flat. Ba, artery, and Bv, 

 vein at the base of the pecten. The arrows indicate the direction of flow of 

 blood. . 



off branches which extend along the middle of each fold (fig. 

 35, A). The very rich capillary network is partially shown in a 

 diagrammatical way. The ridge at the free margin is cut (c) so 

 that the folds can be spread out to show the arrangement of the 

 blood-vessels. The veins (v), which are situated at the angles of 

 the folds and which are formed by the vessels from the capil- 



