MidHiiiicledicd Condition of the Vegetable Cell. 51 



EXPLANATION OF PLATES. 



Plate V. 



Hg. \. Cells from Pohjgonuin Siaholdii. 



a. Emlo-nucleolus is dividing. 

 h. Nucleolus is dividing. 

 c. Nucleus is dividing. 

 Fig. '1. Cells from Polygonum Siaholdii. 



a. Nucleolus containing two endo-nucleoli. 



h. Nucleus containing two nucleoli, a large and a 



small one, each with an endo-nucleolus. 

 c. Nucleus " fragmenting " or " dividing directly." 

 Fig. 3. Cell from Polygonum Sieholdii. 



Nucleus dividing directly. 

 Fig. 4. Variously- shaped nuclei from fibres of Polygonum Sieholdii. 

 Fig, 5. Fragmentation of nuclei copied from Strasburger's paper in 



the Botanisdie Zeitung. 

 Fig. 6. Cell from. Acanthus mollis, from the petiole-nucleus and 

 nucleolus dividing, the nucleolus being so placed as to 

 be divided before the nucleus. 

 Fig. 7. Nuclei from Acanthus mollis. 



a. shows the " hyaline " layer of protoplasm. 

 h. shows three large nucleoli, with their limiting 

 membrane. 



c. shows a nucleolus containing two endo-nucleoli, 



d. shows two nucleoli, one being larger than the 



other, and containing a distinct endo-nucleolus. 



e. shows a nucleus dividing. 



/. shows a nucleus, evidently newly formed, or else 

 where nuclear membrane has been torn across. 

 Fig. 8. Large nucleus from Eschsclwltzia californica, containing 

 two nucleoli, one very large, and showing limiting 

 membrane very well. 



Plate VI. 



Fig. 1. Multinucleated cell from Dictamniis Fraxinella. 

 Fig. 2. Do. do. from Impatiens Noli-me-tangere. 



Fig. 3. Cells from Podopliyllum peltatum. 



a. Multinucleated cell. 



h. Do. do. 



c. Do. do. 



d. Nucleus dividiu'!-. 



