VARIATION IN TOAD AND ISOI'OD. 



277 



examined for the purpose, the following variations of these blood 

 vessels were met with : (1) one vein branching before reaching the spleen 



gast. 



ree t. 



lienes 



corp. adi p. 



org. Bidrl. 



testis 



- nephros 



duct. Müll. 

 Cut 6. 



Viscera in natural size ; somewhat spread out. 



and one artery, two specimens, (2) one 

 vein and two arteries, (3) one vein and 

 one artery, (4) two veins and one 

 artery, (5) three veins and one artery. 

 In the specimen under consideration, 

 there are two spleens entirely separat- 

 ed from each other. One is smaller, 

 somewhat flattened and round, and is 

 situated more on the left side, being 

 separated from the other by the inter- 

 vening portion of the mesorectum, in 



art. mes. ant. 



Cut. 7. 

 The two spleens enlarged. 



