CIRCULATION OF FISHES. 



15 



traversed these organs, passes towards the head by another 

 vessel, which in like manner runs along the edges of the branchial 



Branchial Artery 



%> % s 

 Arterial Bultv, 



Ventricle-.^ 

 Auricl^ __ 



Venous Sin us*-- 



Vena Porta, Liver, &C.-T _ 



.Vessels of the Gills 



Intestine 



Vena Cav; . 



-Dorsal Artery 



FIG. 258. CIRCULATING APPARATUS OF FISH. 



arches. These canals then send out some branches to the 

 neighbouring parts, and are united together again to form a large 

 dorsal artery, which passes backwards, beneath the vertebral 

 column, and spreads its ramifications to all parts of the body. 



