THE REPRODUCTION OF THE PROTOZOA 



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Fi(}. 68. Budding of Acanthocystis aculeata (compare Fig. 64, A). A, B, Division 

 of the nucleus, in which the central grain takes no part ; C, extrusion of a 

 bud ; D, three buds in process of extrusion, the nucleus of the parent dividing 

 again ; E, free bud ; F, flagellula, and G, amoebula, produced from buds ; 

 // and /, two stages in the extrusion of a centriole from the nucleus of a bud 

 to form the central grain of the adult form. After Schaudinn (82). 



