414 BOTANICAL GAZETTE * [TUNE 
tip was apparent. The dermatogen had exfoliated and the periblem 
cells, having lost their normal rectangular form, were irregularly 
rounded. All early stages of mitosis were present, and the develop- 
ment of the chromosomes had proceeded normally. All stages of 
3 4 5 
Fic. 3. Vicia Faba three minutes in n/12 copper sulfate, then three hours in 
distilled water.—Fic. 4. Vicia Faba three minutes in n/12 copper sulfate, then twenty 
hours in distilled water.—Fic. 5. Vicia Faba seven minutes in n/12 copper sulfate, 
then three hours in distilled water. 
mitosis up to the formation of the cell plate occurred, but with fre- 
quent degeneration of the spindle fibers (fig. 4). The newly formed 
division walls separating certain cells were very thin and indistinct, 
and the appearance presented on first examination suggested the 
binucleate cells described by NEMEC (22) and others. These divi- 
sion walls were usually asymmetric with the other cell walls. In 
