Fig. 3. 



it 



le 

 m 



te 



d 



1. Small specimen of Eozoon Canadense, weathered out from the con* 

 taining rock, and showing its laminated structure. 



2. Casts of irregular or acervaline chambers of upper part (magnified). 



3. Surface of a cast of a fiat chamber, showing its constituent cham- 

 berlets (magnified). 



4. Section of casts of flat chambers (magnified). From the Lauren- 

 tian of Canada. 



to aoQ 



