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428 Scientific Intelligence. ' 



Oolite series, but entirely below botb. In the former relation, Prof. Wm. 

 B. Rogers placed the coal and sandstone in view of all the evidence at- 

 tained in 1843. This view Sir Charles Lyell considered to be confirmed 

 by his own subsequent special examination, as he states in his Elementary 

 Geology, sixth edition, p. 330. 



But more extensive examinations and discoveries of fossils, animal and 

 vegetable, have changed the character and value of the evidence and led 

 to some changes of opinions. Professor 0. Heer, of the Pederal Poly- 

 technic School, Zurich, who is distinguished for his knowledge of fossil 

 plants and insects, has carefully examined Prof. Emmons's N. Carolina 

 Keport, as well as specimens, and forwarded his conchi^ionsand corrections, 

 which are now before me, and have great importance in determining the 

 geological position of the coal and the sandstone. The fossils mentioned 

 by Prof. Heer are referred to the page of the N. Carolina Eeport, and his lA 



opinion given in quotation marks. ^ 



Stranger lies ohliqiins Em., p. 325; "good." 



Acrostichites ohlongus^ Gopp. n. sp., p. 326. — This fern has been taken 

 for Pecopteris Whitbyensis, but is properly removed to another genus by 

 Dr. Emmons, because it is very different, says Prof. Heer in the "form of 

 its sori," and "bears no resemblance to fig. 2 and 4 of plate 109 of 

 Brongniai-t, nor to the figure given by Lindley," of R Whitbyensis. "It 

 is the neuration in particular v/hich proves their difference ; for the Ameri- 

 can plant presents a neuration which is reticulated, or at least its second- 

 ary nerves are tied together, while in the English plant the secondary 

 nerves are digital and dichotomous, without being tied together laterally." 



The P. Whithyensis then is not in the Richmond nor the N. Carolina 

 Coal Field and is no evidence of their geological position. 



Pecopteris Carolinensis Era., p. 32Y, is " Gutbierea Carolinensis, Heer." 



Pecopteris (Aspidites) hullatus^ Bunbury, p. 328. — Prof. Ileer says 

 this fern " resembles so closely the Pecopteris Stuttgartiensis of Brongniart 

 that I do not hesitate to regard them as identical. It cannot be compre- 

 hended how Bunbury has failed to recognize at least the great resem- 

 blance to the European species, so abundant in the Keuper, at Stuttgart, 

 at Bale, at Basiere, &:c." 



Neuropteris lincefolia^ Bunbury, p. 329. — "It is not a Nenropteris but 

 rather a CyclopteriB^ resembling the C. pachyrachis, Gopp. (Fossil Genera 

 pL 4, fig. 13 and 14 of the Lias," 



Pecopteris falcatus Em.^ p. 32^. — "It is probably a Loccopteris, It 

 greatly resembles Loccopteris germinans of Goppert (Fossil genera, pamph- 

 let 1 and 2, pi. C, fig. y.") 



Dictyocautus striatus, n. g., Em., p. 293.— This fossil has an obvious 

 resemblance to :Xoeggerathia, p. 357 of Lyell's El. Geol., Ed. 6th, 185Y. 



Pterozamites decussatus^ Em., p. 330.— -Of this Cycadea, Prof Ueer 

 writes; "Although the species is represented but by a part of a leaf, this 

 specimen resembles so much Pterozamites longifolius that I do not doubt 

 of their identity, that is, Pterozamites longifolius, Braun." Later speci- 

 mens led Prof. Emmons to the same correction. 



Equisettim columnare^ p. 334. — Of this Calamitacae '^xot Heer ob- 

 serves ; " Emmons has drawn but a poor specimen, which however appears 

 to be this species." All will coincide in this opinion who know the fossil 

 and loot at the figure. 



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