FIG. i. 



FIG. 2. 



FIG. 3. 



FIG. i. SMALL SPECIMEN OF EOZOON, weathered out, natural size, from 

 a photograph. 



FIG. 2. CANAL SYSTEM OF EOZOON injected with serpentine (magni- 

 fied). 



FIG. 3. VERY FINE CANALS AND TUBULI filled with Dolomite (magni- 

 fied). 



(From Micro-photographs.) 



