( 19 ) 

 TABLE XIY. 



Systematic Survey of the Neptunian fossiliferong strata of the earth witb 

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



IV. Caenolithic Strata, 

 circa 3000 feet. 



III. Mesolithic Strata. 



Deposits of the 



Secondary Epoch, circa 



15,000 feet. 



Pliocene, Miocene, Eocene. 



IX. Chalk System. 



VIII. Jurassic System. 



VII. Triassic System 



II. Palaeolithic Strata. 

 Deposits of ttfe 



r i 



Primary Epoch, circa 

 42,000 feet. 



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. 



L Laurentian System, circa 

 80,000 feet. 



