Resorption of the formed elements 



71 



invariably the same. The red corpuscles are unacted upon by the 

 plasma and undergo the same changes within the leucocytes. These 

 changes are in fact comparable to those described in the preceding 



Fig, 13. Leucocytes of a cockchafer larva 

 containing red blood corpuscles of 

 a goose. 



Fig. 14. Eed blood corpuscles of a goose, 

 free, and ingested by leucocytes of a 

 snail {Helix pomatia), 24 hours after 

 their injection. 



,'--P 



Fig. 15. Leucocyte of a cockchafer larva, 

 7 days after last injection of goose's 

 blood. 



Fig. 16. Leucocyte from peritoneal cavity 

 of a gold-fish after ingesting red blood 

 corpuscles of a guinea-pig. 



chapter in discussing the intracellular digestion of the red corpuscles 

 by the intestinal cells of the Planarians. In both cases the red cor- 

 puscles are seized by amoeboid cells and subjected to the influence of 



