290 Observations on the Nucleoli in the Cells of Hydra Fusca 



Fig. 6. Three ectoderm cells showing nucleoli passing into the cytoplasm. 



Fig. 7. An endoderm cell showing nucleoli lying in the cytoplasm. Some 

 have a dark centre ; in others the dark centre has disappeared. The nucleus also 

 exhibits pseudopodial processes. 



Fig. 8. An endoderm cell in which a nucleolus is seen pressed against the 

 outside of the nuclear membrane. 



Fig. 9. Two endoderm cells, one of them containing a number of nucleoli in 

 the cytoplasm. One of these nucleoli is seen to be dividing. 



