252 



EUGLENA 



(CgHj^Oj), but differing from it in remaining uncoloured 

 by iodine. 





lu a 



•£ S.S £-= §"3 

 •i:S.S °l i « I 



5 s — -O " = ■' 



* E S " *'' 



sm| 



■g& 





Q "m c bo's '^ S '" c^ n 



' -■ .a .-' --^„- 

 y b C K 



Water containing Euglena gives off bubbles of oxygen in 

 sunlight : as in Hsematococcus the carbon dioxide in solution 

 in the water is decomposed in the presence of chlorophyll, 



