Proceedings of the American Academy of Arts and Sciences. 



Vol. 51. No. 6. — November, 1915. 



MITOSIS AND MULTIPLE FISSION IN TRICHOMONAD 

 FLAGELLATES. 



By Charles Atwood Kofoid and Olive Swezy. 



From the Zoological Laboratory of the University of California. 



With Eight Plates and Seven Figures in Text. 



