52 



BIOLOGY OF THE PROTOZOA 



merits. Such a definition obviously would fail to specify any par- 

 ticularly nuclear structure, and so far as its practical value is 

 concerned the term karvosome is no more useful than the non- 



Fig. 25. — Dileptus gigas: A, vegetative individual in culture with nucleus in the 

 form of scattered chromatin granules; B, individual showing the effect of treatment 

 with beef extract on the chromatin granules. (Original.) 



committal term Binnenkorper or Minchin's equivalent term endo- 

 some. I would advocate, therefore, discarding altogether the term 

 karvosome which seemingly bears the earmarks of something 

 definite in the cell, using in its place the general non-committal 



