Anthracite formation of Wilkesbarre, &. 3 
lates lie over one another in a very confused manner ; 
they readily decompose * in a short time on exposure to 
the atmosphere. 
4. Sand stone, rather soft at first, becoming harder in depth. 
About fifteen feet of this stratum is exposed, it is similar 
to the No. 7, at Smith’s bed. 
It is evident from the inclined position of the strata, that 
one bed of coal lies over another, the upper being evidently 
of much later formation. 
At Buacxman’s bed, on the = irae of the river—dip 
to the panic! about 357 he stra 
‘of: vaien: ten Sie 
impt in this are few, “hi branches af ire, a 
it Shout: six feet high, 3 in hom; occurred in 
2. Coal, twelve feet thick. 
3. Argillite, thickness unascertained. 
4. Sand stone, thickness not known. 
5. Schist, with intervening layers of micaceous sand stone 
and arzgillite, the latter. with immprestiéns generally of 
tie plants. 
. Coal, fourteen feet thick. 
7. Argillite, without i impressions, thickness not known. 
Letter to Mr. Avexanper Baonaii ste : “Ruigincer of 
ee Member of the Royal Aeademy of Sciences, Ge. 
Throvgh the medium of the American Journal of Gatenée 
your circular request, addressed to Naturalists and the 
friends of Science, has reached me, and desirous of afford- 
ing y6u all the information in my power on the subject of 
organized remains which have come under my~notice in 
this quarter, I have forwarded to you a collection oe 
vegetable i impressions of the Anthracite for“tation, th the 
range of which I reside. 
ngaged myself in Bae ere, a collection and in figur-. 
ing the fossil reliquie of this formation, I have 
only those of which a have duplicates. Tf it would be 
pleasing to you to obtain more of them, you have only to 
signify your wish in this respect and you shall be 
