Plate Y. 



Nature-print of Eozoon, showing laminated, acervuUne, and fragmental 



portions. 



This is priated from an electrotype taken from an etctied. slab of Eozoon, and 

 not tonclied with a graver except to remedy some accidental flaws in the plate. 

 The diasronal white line marks the course of a calcite vein. 



