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THE DAWN OF LIFE. 



Fig. 14. Entosolenia. 

 A one-celled Foraminifer. Magnified as a transparent object. 



Fig. 15. Biloculina. 

 A many-chambered Foraminifer. Magnified as a transparent object. 



Fig. 16. Polysiomella. 

 A spiral Foraminifer. Magnified as an opaque object. 



