wHiTE.j CORRELATIONS IN THE SOUTHERN" FIELD. 809 



is not. in fact, identical with the latter as mined in the Wiconisco 

 Basin. That the Lvkens coal No. 4 probably extends farther to the 

 east on Broad Mountain will be suggested by the ilora obtained at the 

 old Altamont collier}' No. 1. 



7. Altamont colliery No. i, near Frackville. Station 36, PL CLXXX. 

 This colliery is situated on the south margin of the New Boston-Gor- 

 don Basin at the north Ijorder of Broad IVIountain, on the northern 

 limit of the Southern Anthracite lields. The areal geology is shown 

 on mine sheet vii. Atlas Southern Anthracite Field, Pt. II. The struc- 

 ture is illustrated in section IT, cross-section sheet v. Atlas. Pt. V, 

 the rock sequence being shown in columnar-section sheet ix. Part 

 IV. As might be inferred from the columnar sections,^ compiled from 

 diamond-drill bore holes along the basin, the coal was found to be 

 very "" faulty," soon pinching too much for profitable mining. 



The plants collected at this mine are: 



Lepidodendron clypeatum. 

 Lepidostrobua cf. ornatus. 

 Lepidophylluin quinnimontanum. 

 Cordaites grandifolius? 

 Trigonocarpuin ampullajforme. 



Aneimites pottsvilleiisis. 



Mariopteris pottsvillea. 



Sphenopteris asplenioides. 



Sphenopteris patentissima. 



Alethopteris lonchitica? 



Neuropteris Pocahontas var. iiifeqiialis. , Carpolithes orizajformis. 



Neuropteris Smithsii (form) . ! 



This flora, even more clearly than that from the Kemble drift, shows 

 a composition distinct!}' characteristic of the Lower L^'kens division, 

 to which is added a small element of younger species. The two floras 

 are of nearly the same general composition and significance, and repre- 

 sent, I believe, approximately, if not identically, the same stage. There- 

 fore, notwithstanding the reported presence of a 4-foot coal, supposed 

 to be Lykens coal No. 4, closely overlying the Kemble drift coal (l)ut 

 one coal appears in this portion of the diamond-drill borings in this 

 vicinity on Broad Mountain), I am strongly disposed to regard the coal 

 here as even slightly younger than, if not really contemporaneous with 

 the Lykens coal No. 4. 



It is probable that the same coal, which appears, as will next be 

 shown, also to extend along the southern limb of the Western Middle 

 field to the west of Frackville, is opened at the Gordon incline slope, 

 Moser's drif t,^ and other points on the western lobes of Broad Mountain. 



8. Mount Plsgah, near Ifaiich Chunl. Station 40, PI. CLXXX. 

 From a small drift recently driven on the north slope of Mount Pis- 

 gah, not far from the head of the incline of the Switchback Railway, 

 the following species were collected: 



Pecopteris serrulata. 

 Neuropteris sp. indet. 

 Lepidodendron clypeatum. 



Cardiocarpon cornutum ? 



Cardiocarpon bicuspidatum var. ohioense. 



1 See also Summary Final Report. Vol. Ill, Pt. I, p. 2080, pi. 367 



2 Atlas Southern Anthraeito Field, I't. II, mine sheet xiii. 



