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Vnivcrsitij of California Publications in Zoology [Vol. 2u 



As has been stated in the previous article, more evidence is required 

 to establish a critical determination of these suspected cells as parasitic 

 amoebae, since they may be only wandering amoeboid cells with an 

 unusual type of nucleus for a human cell, a product of the pathogenic 

 process. 



Fig. 



Fig. 3 



Fi 



Figs. 1-3. Entamoeba dyscnteriae in the active state with pseudopodia, 

 spherical vesicular nucleus with peripheral chromatin, central karyosome, and 

 spoke radiations. X 2500. 



Fig. 4. An amoeba with nucleus in the telophase of cell division, with 

 intact nuclear membrane, a few (probably not over six) chromosomes at either 

 pole. The intradesmose is the black line connecting the two masses of chromo- 

 somes. It presumably connects the centrosomes at the apices of the nucleus. 

 X 2.500. All drawings from amoebae in sections of inguinal gland stained in 

 iron haematoxylin. We are indebted to Dr. L. A. Walker of Helena, Montana, 

 for this gland. 



We have, however, the same criterion to apply here a.s in the 

 parasitic amoebae of the bone marrow, namely, the morphology of the 

 nucleus at mitosis and the number of chromosomes. We have accord- 

 ingly ma_de an intensive search of these sections, and have found 

 among the .supposed amoebae more than ten instances of some phase 

 of the mitotic process. 



