Granger on ZanesviUe Slate. 7 



plants to which they or any of them belong, or to which 

 they bear the strongest analogy. 



I cannot forbear suggesting, that a botanical description- 

 of the vegetable remains found in different latitudes and 

 longitudes, and which it is said always occompany the coal 

 strata, may lead to very important results. They may at all 

 events, afford some evidence, whether the poles of the earth 

 have at some remote period been changed. 



I had nearly forgotten to mention, that the pebbles in our 

 river are many of them primitive rock. H. No. 1, is a spe- 

 cimen of quartz pebble of considerable size. No rocks of 

 these descriptions are to be found in this region. 

 Very respectfully 



vour obedient servant, 



EBENEZER GRANGER, 



Remarks by the Editor. — Mr. Leconte, of the Engineer 

 department at Washington, on viewing the specimens de- 

 scribed above, pronounced the impressions on most of them 

 to be those of ferns; the broad leaved impression he con- 

 sidered a fucus. It may be added, that the specimens are 

 singularly beautiful; and the delineations of several of them 

 given in the present Number, cannot fail of being interesting 

 to Geologists, 



We would again call the attention of Geologists to the 

 views of Mr. Brongniart, of Paris, expressed in his note 

 which was printed in the first Number of this work. He is 

 pursuing, on an extensive scale, the plan of comparing the ve- 

 getable impressions from different countries, and is particu- 

 larly anxious to obtain those from the American coal forma- 

 tions. We should be greatly obliged to any persons who will 

 transmit specimens, especially from the anthracite beds near 

 the Susquehannah; from the bituminous coal beds of Rich- 

 mond, Pittsburgh, and Ohio, and generally from all American 

 localities. Several specimens of a kind are desireable, that 

 at least, one good one may be forwarded to Mr. Brongni- 

 art, and others reserved for an American Cabinet. We 

 beg leave to refer to some extracts of a letter from Mr.. 

 Brongniart — see the present number. His views are wor- 

 thy of general encouragement, since they have for tbcir 

 object, the promotion ef the sripnre of Geology. 



