322 Review of ^'■Outlines of the 



zite, or hyperstene ; and in this paste are innbedded calca- 

 reous spar, mica, or chlorite, and indurated clay. 



Kewer Magnesian^ or Conglomerate Limestone. Synonyme, 

 First Floetz Limestone of Werner. — This is the oldest rock 

 of the supermedial order. It is distinct from the older rocks 

 of similar composition, associated with the mountain lime- 

 stone, though sometimes blended with them. It has a gran- 

 ular, sand)- structure, a glimmering lustre, and a yellow col- 

 our ; and is associated with conglomerate limestone The 

 organic remains are not numerous : but they may serve to 

 distinguish it from the older formations. They consist of 

 fish, shells, &:c. 



In giving the foreign localities of the Red Marie and 

 Newer Magnesian Limestone series, we perceive the Ger- 

 man fetid limestone, cellular limestone, compact marly 

 limestone, and bituminous marie slate, to be included near 

 the centre : rocks, whose relative position has long per- 

 plexed geologists. Reference is of course made to all 

 other countries, where rocksalt, or gypsum occurs ; since, 

 in every known locality, these minerals, certainly the 

 latter, are accompanied by the red marie, or as it is some- 

 times called, the saliferous sandstone. North America is 

 among these references ; as Louisiana, the banks of Hock- 

 hocking, Sciota, Wabash, Tenessee, Kanaway, Great San- 

 dy, &;c. and the Salines, near Onondaga and Seneca lakes, 

 in New York. We have seen a specimen of the rock from 

 which the salt springs issue at the latter locality, and have 

 no doubt it is the red marie ; and we are informed, that the 

 gypsum lies above this rock, and the coal beneath it. It 

 will be of great importance to American geology, to have 

 this rock identified with the English red marie; as it will 

 furnish a convenient starting point, from which geologists 

 ma} proceed to identify other strata above and beneath. 

 Should the New York rock and the English rock prove to 

 be the same, the clue will at once be furnished, for assign- 

 ing to their proper series, all the other formations of the 

 great secondary and tertiary tract, between the Alleghany 

 and the Stony mountains ; and when this is done, the smal- 

 ler basins will be easily determined. We shall expect to 

 find this point settled by Mr. Eaton, in the Geological Sur- 

 vey of the great western canal, he is now prosecuting, 



