^m 



Fig. 21. — The venous system of the frog, with the heart, lungs, liver, kidneys and 

 right testis, supposed to be removed from the body and viewed from the dorsal 

 aspect. 

 abd. abdominal vein ; hr. subclavian vein ; cd. cardiac vein ; ds. hub. dorso lumbar 

 vein ; du. duodenal vein ; ext.ju. external jugular vein \fin. femoral vein ; gs. 

 gasti-ic vein ; hp. hepatic vein ; ^.//. h^atic portal vein \ int. intestinal veins ; 

 int.ju. internal jugular veirf; kd. kidney ; /. au, left auricle ; Ing. lung ; Ivr. 

 liver ; ms. cu. musculo-cutaneous vein ; /r. cu. precaval vein ; pt. czf. postcaval 

 vein ; ^uL pulmonary vein ; pv. pelvic vein ; r. au. right auricle ; rn. renal 

 veins ; m. pt. renal portal vein ; sc. sciatic vein ; sj^l. splenic vein ; sp7n. 

 spermatic vein ; s. v. sinus, venosus ; ts. testis ; -ves. vesical veins (from bladder). 

 (From Parker and Haswell's Zoology.) 



G 2 



