352 



B. F. KINGSBURY 



'11) was found particularly useful because of the easy differen- 

 tiation of the cells containing lipoid' and so-called 'mitochondria' 

 (representing undoubtedly lipoid in masked form). The mor- 



a poor indicator of stage of development, and the seriation may be easily deter- 

 mined from the internal structure of the ovary itself. 



