Races of Paramecium. 



503 



8 



,|^*M '1|-. 





10 



9 



Fig. 7. Micro-nuclei in the resting condition, and a portion of the meganucleus 

 of an aberrant individual of the "caudatum" race L2. X 1425. 



Fig. 8. Resting micro-nucleus and a portion of the meganucleus of a normal 

 individual of the "caudatum" race L2. X 1425. 



Fig. 9. Micro-nucleus in resting condition, and a portion of the meganucleus 

 of an abnormal "aurelia" form, race i. X 1425. 



Fig. 10. Resting micro-nuclei and a portion of the meganucleus of a normal 

 individual of an "aurelia" race k. X 1425. 



Fig. 11. Dividing individual of the race L2. In the anterior half (right in the 

 figure) the micro-nucleus appears as if preparing for a second division. X 536. 



