148 



Transactions of the Society. 



Oogonium. 

 Mitochondria- 



MOLLUSCA. 

 Helix, Limnxa, etc. 



Oolgi apparatus- 

 Mitochondria — 



Full-grown Oocyte. 

 > Mitochondria. 



Yolk spheres. 



>- Golgi apparatus. 



Patella vulgaris. 



■> Mitochondria. 



Yolk spheres associated with 

 Golgi elements. 



Golgi elements and archoplasm 



■^ 



-^ Definitive Golgi apparatus with 

 unchanged archoplasm. 



ASCIDIA. 



Mitochondrium (chondriome) 



Definitive mitochondria. 



Yolk spheres. 



Yolk nucleus 7( 



(soon disappears) 



Golgi apparatus- 



■> Definitive Golgi apparatus. 



Golgi apparatus associated 

 with yolk spheres. 



MAMMALIA (like Leyus). 



^ Definitive mitochondria. 



Mitochondria" 



->Fat. 



Golgi apparatus- 



Ground cytoplasm (?] 



Mitochondria: 



Golgi apparatus- 



->■ Definitive Golgi apparatus. 

 .->- Scanty yolk. 

 > Fat 



INSECTA (Apanteles). 



^ Definitive mitochondria. 



' > Yolk. 



■> Golgi apparatus 



Nucleus (nucleolus) 



->■ Secondary nuclei. 



