262 



ZOOLOGY 



SECT. 



the renal veins to the post-caval, part by the pelvic and abdominal 

 veins to the liver, and thence by the hepatic veins to the post-cavaL 

 Lastly, the blood which has been purified in the lungs is returned 

 by the pulmonary veins (pul.) directly to the left auricle. 



FIG. 880. Ran a temporaria. The venous system with the heart, hmgs, liver, kidneys, and 

 right testis, from the dorsal aspect, abd. abdominal vein ; br. brachial vein ; cd. cardiac 

 vein ; ds. Imb. dorso-ltimbar vein ; du. duodenal vein ; ext. ju. external jugular vein ; fin. 

 femoral vein ; gs. gastric vein ; lip. hepatic vein ; lip. pt. hepatic portal vein ; int. intestinal 

 veins ; int. ju. internal jugular vein ; led. kidney ; 1. au. left auricle ; Ing. lung ; li-r. liver ; 

 ins. cu. musculo-cutaneous vein ; pr. cr. precaval vein ; pt. cv. post-caval vein ; pul. pulmonary 

 vein ; pv. pelvic vein ; r. an. rip-h 4 :- aaricie ; rn. renal veins : rn. pt. renal portal vein ; 

 sc. sciatic vein; spl. Splenic \em ; spm. spermatic vein; s. v. sinus venosus ; ts. testis; 

 ves. vesical veins. 



^ It will be seen that there is no trace of cardinal veins in the 

 Frog : these are, however, present inV the larva, but, during meta- 

 morphosis, their posterior ends becomfe united with the post-caval-, 

 and their anterior ends disappear altogether. 





