The Newark System — Russell. 179 
opinions of various geologists respecting their European equiva¬ 
lents* are briefly designated: 
The rocks referred to in the table are a unit in American 
geology and form a well defined system which is limited above 
and below by great unconformities. Fossils occur in abundance 
at certain localities but as yet have not been found at enough 
horizons in the various areas to establish subordinate divisions. 
This has been attempted, however, and not only have numerous 
subdivisions been proposed but various fossiliferous layers have 
been correlated on the strength, in some instances, of a very 
few fossils, with various terranes in Europe. At other times 
Names and correlations applied to the whole or portions of the 
Newark System. 
1820 
1832 
1833 
1835 
1836 
1839 
1839 
1842 
1842 
1843 
1843 
1843 
1844 
1847 
1847 
1847 
1849 
1850 
1851 
1851 
1853 
1856 
1856 
1856 
1856 
185 
1856 
1857 
1857 
1857 
1858 
1858 
NAME USED. 
Nutt all, F. 
Hitchcock, E... 
Olmsted, D. 
Hitchcock, E.... 
Taylor, R. C. 
Redfleld, J.H... 
Old Red Sandstone_ Maclure, W.. 
Old Red Sandstone.... 
Old Red Sandstone and 
Coal formation. 
Freestone and Coal 
formation of Orange 
and Chatham [N.C.] 
New Red Sandstone.... 
Carboniferous. 
Lias [?]. 
Middle Secondary 
Strata. . 
Middle Secondary 
Strata. 
Secondary Formation 
Keuper. 
New Red Sandstone.... 
Old Red Sandstone and 
Coal Measures.. 
Oolite. 
New Red Sandstone.. 
Triassic or Jurassic.... 
Permian or Triassic.... 
Inferior Oolite? 
Keuper or Lias. 
Silurian. 
New Red Sandstone.... 
Post Permian. 
New Red Sandstone or 
Keuper_ 
Jurassic_ 
Near the Lias of Eu 
rope. 
Trias or New Red 
Sandstone.. 
Oolitic. 
Newark Group...... 
Triassic and Jurassic... 
Trias and Permian 
Jurassic. 
Keuper. 
Chatham Series. 
Keuper.. 
lias. 
Mesozoic Red Sand- 
Rogers; H.D.... 
Rogers, W. B. .. 
Peicival,T.G... 
Rogers, W. B.... 
Mather, W. W. 
Cozzens, I. 
Rogers, W. B 
Silliman, B... 
Bunsbury C.J,F 
Lyell, C. 
Lyell, C. 
Marcou, J. . 
Jackson, C.T... 
Agassiz, L... 
Redfleld, W.C... 
Marcou, J. 
Rogers, W.B.. 
..Jackson, C.T.. 
Hitchcock, E.. 
Hitchcock, E.. 
Redfleld, W. C. 
Dana,J.D. 
Emmons, E.... 
Rogers, H.D.. 
Heer, O. 
Emmons, E.... 
Lyell, C. 
Agassiz, L. 
PLACE OF PUBLICATION. 
Am. Philo. Soc. Phila., Trans. Vol. 1, n. 
s,p.20, and map. 
Acad. Nat. Sci., Phila., Jour. Vol. 2,p. 37 
Am. Jour. Sci. [1] Vol. 6, pi. op. 86. 
Rep. Geol. North Carolina, p. 12. 
Rep. Geol. Massachusetts, p. 206. 
Geol. Soc. Pa. Trans., Vol. 1, p, 294. 
Lyc. Nat. Hist. N.Y., Ann. Vol. 41. 
Third Annual Rep. Geol. Pa., p. 12. 
Geol. of Virginia, p. 74. 
R. p. Geol. Connecticut. 
Amer. Jour. Sci. [11 Vol. 43. p. 175. 
Rep. Geol. of New York, part iv, p 293. 
Geol. Hist, of Manhattan, p.43. 
Amer. Assoc. Geol. Nal., Trans., p. 298. 
“ “ “ Proc., pp. 14,15. 
Quar. Jour. Geol. Soc., Lond., v.3, p.288. 
275. 
‘ “ “ “ “ “ 278-280 
Geol. Soc. France, Bull., Vo 1 . 6. p. 575. 
Am. Jour. Sci. [1] Vol. 3, p. 335. 
Am. Assoc. Adv. Sci., Proc., Vol. 5, p.46. 
“ “ “ “ “ “ p. 45. 
Geol. Map of North America. 
Boston Soc. Nat. Hist. Proc.,v. 5,p. 14. 
Am. Jour. Sci [1] Vol. 5, p. 186. 
Outlines of Geol. of the Globe, p. 96. 
“ “ “ “ Map. 
Am. Jour. Sci. [1] Vol. 22, p. 357. 
“ “ “ “ “ p. 357, 
Geol. Rep. North Carolina, p. 273. 
Geol. Map of U. S.,Johnson’s Phys. Atlas. 
Geol. of North Am. by J. Marcou,p. 16. 
Am. Geol., Pt. vi. p. 19. 
Cited by J. Marcou .n Geol. of N. Am. p. 16 
,. « <• “ *• p. 15 
