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 



"\ 

 Arterial Bull ^ 



Ventricle-.^ 

 Auricle -,... 

 Venous Sinus* 



Vena Porta, Liver, &C.-; _- 



Intestine 



Vena Cavp..- 



Vessels of the Gills 



-Dorsal Artery 



-Kidneys 



Dorsal Artery or Aorta- 



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. 



