282 J. T. PATTERSON AND H. L. WIEMAN. 



several other forms are of this same nature; nevertheless, we are 

 inclined to believe that a careful study of the spindle in such 

 organisms will show it to be only the first maturation spindle. 



WOODS HOLE, MASS., 

 August 3, 1912. 



LITERATURE. 

 Bartelmez, G. W. 



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