 | 1861 - 500 sivua
...portions of these lower rocks, which at the same time offer as yet no evidence of any fauna lower than that of the Potsdam. So that we regard the whole Quebec...other than the Taconic system of Emmons. Distinct in its lithological characters from the Potsdam and Calciferous formations as developed on Lake Champlain,... | |
 | 1862 - 478 sivua
...as the greatly developed representatives of the Potsdam and Calciferous groups (with part of that of the Chazy), and the true base of the Silurian system." "The Quebec group with its underlying shales," this author adds (and he expresses the opinion of Sir WE Logan), "is no other than the Tnconic system... | |
 | Samuel Joseph Mackie - 1861 - 664 sivua
...as the greatly developed representatives of the Potsdam and Caleilerous groups (into part of that of Chazy), and the true base of the Silurian system." "The Quebec group, with its underlying shales," this author adds (and he expresses the opimon of Sir W. Logan), "is no other than the Taconic system... | |
 | 1861 - 534 sivua
...as the greatly developed representative of the Potsdam and Calciferous groups (with part of that of Chazy), and the true base of the Silurian system.' ' The Quebec group with its underlying shales,' this author adds (and he expresses the opinion of Sir W. Logan,) ' is no other than the Taconic system... | |
 | 1862 - 448 sivua
...as the greatly-developed representatives of the Potsdam and Calciferous groups (with part of that of the Chazy), and the true base of the Silurian system." " The Quebec group, with its underlying shales," this author adds, "is no other than the Taconic system of Emmons ; " which is thus shown to be the... | |
 | 1862 - 446 sivua
...as the greatly-developed representatives of the Potsdam and Calciferous groups (with part of that of the Chazy), and the true base of the Silurian system." " The Quebec group, with its underlying shales," this author adds, "is no other than the Taconic system of Emmons ; " which is thus shown to be the... | |
 | 1862 - 476 sivua
...as the greitly-developed representatives of the Potsdam and Calciferous groups (with part of that of the Chazy), and the true base of the Silurian system." " The Quebec group, with its underlying shales," this author adds, " is no other than the Taconic system of Emmons;" which is thus shown to be the natural... | |
 | British Association for the Advancement of Science - 1862 - 804 sivua
...greatly developed representatives of the Potsdam and Calciterous groirps (with port of that of Chozy), and the true base of the Silurian system The Quebec group, with its underlying shales," this author adds (and h'e expresses tlio opinion of Sir AV. Logan), " is no other than the Taconic... | |
 | 1872 - 520 sivua
...as the greatly developed representatives of the Potsdam and Calcifurous groups (with part of that of Chazy), and the true base of the Silurian system." "The Quebec group, with its underlying shales," this author adds (and he expresses the opinion of Sir W. Logan), •' is no other, than the Taconic... | |
 | James Dwight Dana - 1880 - 964 sivua
...— TS HUNT: Amer. J. Sci., II., xxxi., 402, 1861 (after Logan's defining of the Quebec group); pays, "the Quebec group with its underlying shales is no other than the Taconic system of Emmons." — IDEM: ibid., xxxii., 427, 1861; makes the Taconic, exclusive of the •lates, equivalent of the... | |
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Hall, shown to be the natural base of the Silurian rocks in America, as Barrande and De Verneuil have proved it to be on the continent... 
