THE DAWN OF LIFE 



with the exception of my friend, Professor Ramsay." In 1863 

 the general Report of the Geological Survey, summing up its 



FIG. 5. Weathered Specimen of Eozoon from the Calumet. 

 (Collected by Mr. McMullen.) 



FIG. 6. Cross Section of the Specimen represented in Fig. 8. The 

 dark parts are the laminae of calcareous matter converging to the outer 

 surface. 



