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 TABLE XIY. 



Systematic Survey of the Neptunian fossiliferons strata of the earth with 

 reference to their relative sectional thickness (130,000 feet circa). 



IV. Csenolithic Strata, 

 circa 3000 feet. 



Pliocene, Miocene, Eocene. 



III. Mesolithic Strata, 



Deposits of the 



Secondary Epoch, circa 



15.COO feet. 



IX. Chalk System. 



VIII. Jurassic System. 



VII. Triassic System 



II. Palaeolithic Strata. 



Deposits of the 



Primary Epoch, circa 



42,000 feat. 



VI. Permian System. 



V. Coal System. 



IV. Devonian System. 



I. Archilithic Strata- 

 Deposits of the 



Primordial Epoch, circa 

 70,000 feet. 



III. Silurian System, circa 

 22,000 feet. 



II. Cambrian System, circa 

 18,000 feet. 



I. Laurentian System, circa 

 80,000 feet. 



