Chromatin as ''Hereditary Substance^'' 



3^9 



mcnt of the flagella is clear. He says : "When it enflagellates 

 the karyosome sends out a chromatic process (Figure 16a) 

 which traverses the nuclear membrane, forms a marginal 



bp.--p-^ -.. . i ii^-^%^->^ 



B 



FIGUHE 16. XAEGLERIA GRUBERI ( AFTER KOFOId). 



bp., blepharoplast. ky., karyosome. n., nucleus. 



blepharoplast (Figure 16b hp.) and emerges as two long 

 flagella. (Figure 16d). The body assumes a rigid, asym- 

 metrically curved shape and the organism swims away in the 

 typical spiral course." ^ Since the regularly recurring flag- 

 ella of this animal, two in number, constitute a resemblance 



