Ko. 4731 NOTI-S ON LI'JI'TOI'llh'YS 389 



In cases where Chlainvdomonads were heiiiu dinvstcil hikI icdiiccd 

 in size the food h)st its green color and uTaduitllv Ix'cniiic <l.irk 

 bnnvn (Fig^ .3, G) A-, this pioteeded tlie uti.utn. .inml, ^ 

 and the protoplasm took on a brownish tint, which w.is (-M<|, iitlv 

 due to products of assimilation (Fif?s. 6, 7). On the otii. r IkiimI 

 in two observed cases where diatoms, desmids, and Intiisona wwv 

 being digested, no coloration was noted (Figs. 2, 4). During the 

 •early part of the encystment the vacuoles are not conspicuous. As 

 the end of the encysted condition approaches the vacuoles become 

 more prominent. The cyst may rupture at one. two, three, or 

 four places, and the contents escape tlirougli the clefts. In the 



large cyst shown in Fig. 3 the protoplasm streamed out at a cleft 

 in the apparent uj^per right hand corner of the cyst. As the pro- 

 topLwn floucl ..ut U bi,.k( ..((Hhnt.ilb into toui -u.ith .nH([ii.d 

 portions. Kach part, thoim'h no two were (^(|ual ui size. Ix-caine 



colorless. In the forms thnt had l>ccn tcc(hii<: u[m)ii ( hlani\- 

 domonas the contents emerged at two. thrcr. or tour ch-tt^ in the 



