/^£, 



•rical 



ar 



3 



cell. 





^^^^^bee.'^ 



^dthe 



nthe 



% 



its 



7. 



surface |, 



' • Tw 



I 



i 



Wo 



■ globul 



rt 



ar bodip , 



^'.^^^■ation, parti; 



internodes 

 ied 



the 



) 



"P intofoi 

 parent om 

 t spherical cd 

 masse J while tl 



:m to throw 

 pellets, nowk. 

 -e or less flow 

 iercell....Ttf 



and the dUi 



set free '' 



1 



were 



ifFerent 



1 



•»e 



I 



I 



and motio"^' 



f 



r 



mucus, 



ed also 



chaf ' 



\ 



a 



was 



left onlf 



I 



^rs 



there 



was 



lefin 



ed state, 



01 



1 an n-^-- , , f 



r 



m 



otio" 



of^ 





TUB BEGINNINGS OF LIFE. 



481 



surface. Sometimes the cilia were motionless, and lay 

 like a halo of short radii round its circumference, though 





kJ 



''^i 





O \5^ 





a 



o 





ii^=> Ir^ 



5^=^>> 



^■■>^:^ 



--^^ 





^ ^-. 



■^ --^^^^ 





\.^ 







?-* ^ 



o o 



y-^ ^S-1 



0^^:^^ 



3^ ^': o ^.<m. 



..s^^ 



sv,':/ 



=^:^ 





iL-r--^ --- 



isr? 



"^ 



.5 





.c 



' " <^i 



,.#;■ 



c. e^- 



1. ^^ ^ ^ ^1 



^^;;fj^r 





/ 





mm 





%. 



^f. 







fO ' 



'! IM 







\ i L^-J 



X:^ 





Fig. 88. 



Mode of Origin (?) and Development of Otostoma. (Carter.) 



( X 200.) 



a. Nitella-spheres. Cilia not represented. 



h. Smaller body of same kind enclosed within a cyst, which at length 

 becomes transformed into two ciliated embryos (c). 



d. Outline appearance of embryo Otostoma soon after its emergence 



from the cyst. 



e. More developed form of same — lateral aspect. 



/. Front view of adult Otostoma — showing ear-shaped buccal orifice, 

 and contracting vesicle with radiating canals. 



the sac was otherwise gradually changing its shape ^ 

 while at others there was no appearance of cilia at all. 

 On the other hand^ sometimes the sac was rotating 



VOL. II. 



1 1 



