384 



Intelligence and Miscellanies. 



ties upon which Mr. E. relies for the support of his views, 

 will be carefully described, so that any one will be enabled 

 to judge of his accuracy. 



TABULAR VIEW OF NORTH AMERICAN ROCKS. 





PRIMITIVE CLASS. 





General Strata. 



Subordinate rocks. 



Varieties. 



Principal Beds. 



I. Granite, 



Crystalline, 



Graphic, 



Diallage. 





Slaty (gneiss,) 



Porphyritic, 

 Sandy, 



Steatite. 



II. Mica-slate, 





Fissile, 

 Compact, 





III. Hornblende 



Granitic, 







rocks, 



Gneissoid, 





Augite. 





Slaty, 



Green, 







Sienitic, 



Porphyritic, 





IV. Talcose slate, 



Chloritic, 







V. Granular quartz. 





Opake, 

 Translucent, 





VI. Granular lime- 



Statuary marble, 



White, 





rock. 



Slaty, 



Variegated. 







TRANSITU 



)N CLASS. 





VII. Argillite, 



Roof-slate, 



Shining, 



Purple, 



Red, 









Earthy, 



Calciferous sand- 





Glazed slate, 





rock. 





Flinty slate, 



Jaspery, 



Striated quartz. 



VIII. First gray- 



Inclined, 



Chloritic, 





wacke, 



Rubblestone, 



Chloritic, 





IX. Sparry lime- 





Slaty, 





rock, 





Compact, 





X. Calciferous sand 





Sparry, 





rock, 





Geodiferous, 



Semi-opal. 



XI. Metalliferous 



Compact, 



Birdseye marble, 





limerock, 



Shelly, 







XII. Second gray- 



Horizontal, 



Red sandstone, 





wacke, 





(old red sandstone) 

 Grey sandstone, 









Argillaceous, 



Anthracite. 





Rubblestone, 









SECOND AR 



Y CLASS. 





XIII. Millstone 





Sandy, 





grit, 





Conglomerate, 







Red, (variegated,) 



(breccia,) 





XIV. Saliferous 





Sandy, 





rock, 



Grey (greyband,) 



Marly slate, 

 Sandy, 

 Marly slate. 





XV. Ferriferous 





Green, 



Argillaceous, 



slate, 





Blue, 



iron ore. 



XVI. Ferriferous 





Compact, 



Argillaceous, 



sandrock, 





Gravelly, 



iron ore. 



XVII. Lias, 



Calciferous slate. 





Gypsum, 



