THE FUNDAMENTAL ORGANIZATION 



06 



expression Binnenkorper, or its equivalent term endosome, the 

 latter as yet, at least, having no specific significance, while for the 

 endosomes having functions characteristic of the kinetic complex 

 a specific term may well be applied. In the present work 1 shall 

 employ the term endosome in a general way to indicate all central 

 intranuclear structures including those of kinetic function, while 

 for those which are known to be of the nature of kinetic elements 

 I shall use the term endobasal body. 





Fig. 26. — Division of amebae. A to /, successive stages in division (promitosis) of 

 Vahlkampfia Umax; J to L, mitosis in Endamoeba coli. (Original.) 



The endosome-bearing vesicular nuclei present manifold variations 

 in the arrangement of chromatin. In some the entire chromatin 

 content is confined to the endosome which seems to rest in the center 

 of a colorless enchylema traversed by strands of linin radiating from 

 the endosome to the nuclear membrane (Arcella vulgaris, Cochlio- 

 podium bilimbosum and rhizopods generally, as well as in many 



