CONTEMPORARIES AND SUCCESSORS OP EOZOON. 137 



their pores filled with, calcite^ so as to present a homo- 

 geneous appearance. Others have much the appear- 

 ance of fragments of such Primordial forms as Archceo- 

 cyathus, to be described in the sequel ; but after much 

 careful search, I have thus far been unable to say more 

 than I could say in 1865. 



+ so 



Fig. 32. Archcsospherincs from St. Pierre. 



(■"<.) Specimens dissolved out by acid. The lower one showing interior sei^tn. 

 (p.) Specimens seen in section. 



^ ^^ Cn 



^/ IP? W"^ 



Fig. 33. Archcsosplierina from Burgess Eozoon. 

 Magnified. 



It is different, however, with the round cells infil- 

 trated with serpentine and with the silicious grains 

 included in the loganite. I have already referred to 



