Granger on Zanesville Slate, 7 
plants to which they or any of them belong, or to which 
ey bear the strongest analogy. 
m4 cannot forbear suggesting, that a botanical Jotanipton 
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 easth 
have at some remote period been changed. 
I had nearly forgotten to mention, that the pebbles it 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 
gre ee are to be found in this: — 
“te Very mom jf dee kta | tes 
gE Re agg or erat ci chee bs 
E f aes ie: ber ae Pan 
Siemarks ites ae Euitor. ie Be ripe of the Engineer 
department at Washington, on viewing the specimens de- 
seribed above, pronounced the i 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 
panes scene and the delin ineations of several of them 
annot fail of ste cine miapeta 
NWe would? pen: call thead dttontigt of € ; te 04 to the 
views of Mr. Bronentarz, of Paris, e se goes in his note 
which was printed in the first Number of this work. | He is 
pu , 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 shoul 
transmit - ® Sia ee pe P28 — crs it 
the Squliamoah; from the bituminous coal beds of ih 
present: cranial His views are wor- 
re of poi =a since te have for ‘their 
ess the © prenaans tie-svionceef Geology. |; bss! 2x9 
mt Pees! eae 
