98 EMBKYOLOGY OF THE LOWEK VEETEBKATES CH. 



Meanwhile the wall of the vesicle lying next tin- outer skin 



pin. 



eel. 



thai 



A 



I I'.. 55. Sagitt:il MM lions tln-mi^li tin- jiinr;il nr-.'iu id riiilnyns (.1 I.<; rln. 

 (Aft. -i Ni. \iknlV. I'.MO.) 



A,/.. rum.; H. .lilln. I nun.; ( tl nun.; h. \irin.il 



"ct^l.-iin ; /. l.-ns ; /... |.m.-;il .>; p.n, |.im-;il II.TV; /( .s. |,in,-;il >lalk : pC, |'iiii-;il <.nl -i n\vt h ; 

 !,;il;nn-ni-i-jili:ili.n. 



