230 CHAS. W. HARGITT. 



metazoa does not appear to be quite obvious. Moreover, why 

 mitosis should have come to be regarded as absolutely cardinal 

 in biologic faith is likewise uncertain. At any rate, the repeated 

 revisions of creed as to centrosome, chromosomes, prelocaliza- 

 tion, etc., should suggest a spirit of tolerance toward facts, what- 

 ever their significance. 



SYRACUSE UNIVERSITY, 



THE ZOOLOGICAL LABORATORY, 

 March I, 1906. 



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