!i 



I 



ck. 



nf 



•cell 



cro- 

 U) 



•ical 

 injj;, 

 lich 



meet 



Ihick 



nice, 



Ist's ;irt^ 

 I' them 



tlU'llS I 



Kid. i. Vui. :i. 



Vin. •.».— Section i>f part iif CryptDzoon jn'ollftTiin), Ilnll, x 48, showInK two of (he 

 lirliimry laniliiii! tit (a, a), ami portions of llirec of the canallfci-oiis layers. 



Pio. ;!,— Section of part of ('. occlilcntale, S.N., x 4S, xliowlnu' one of the primary 

 lamina' at (a), and portions of two of the cellular ami canallferoUH layiTs. 

 (Kroin mli'ro photoi^raplis 1).\ I'mf. I'ciihallow.) 



