252 



EUGLENA 



CHAP. 



starch (C 6 H 10 O 5 ), but differing from it in remaining 

 uncoloured by iodine. 

 Water containing Euglenae gives off bubbles of 



nu 



FIG. 69. Euglcna viridis. 



A, view of entire organism, showing details of structure (x about 1000). 



B, anterior end, to show origin of flagellum, etc. (x about 3000). 



C F, four views of the living organism, showing the changes of form produced 



by the characteristic euglenoid movements. 

 G, resting form after binary fission, showing cyst or cell-wall, nuclei, and reservoirs 



of the daughter-cells. 

 ch. chromatophores ; cv. contractile vacuole ; cy. cyst or cell-wall ; fl. flagellum ; 



fl' thickening on flagellum ; fl". bifurcated base of flagellum ; gul. gullet ; 



nc ., nu. nucleus ; ncl. " nucleolus " ; p. paramylum bodies ; r. reservoir ; 



st. eye-spot or stigma. 

 A, from Doflein ; B, from Doflein, after Wager ; C G, after Saville Kent. 



