WHITE] CORRELATIONS IN THE WESTERN MIDDLE FIELD. 811 



survey' the Lower Lykens Vulley coal was formerly worked to a con- 

 siderable extent. From the rock dump at this mine were obtained the 

 following species, which, though few, appear in the Southern Anthra- 

 cite field to be either characteristic of or most common in the horizon 

 of Lvkens coal No. 4: 



Aneiniiteg pottsvillensis. 

 Neuropteris Pocahontas. 

 Xeuropteris Smithgii. 



Lepidodendron clypeatum. 

 Lepidostrobus pennsylvanicus. 

 Trigonocarpum Helenfe. 



B. At the abandoned Helphenstein colliery,"^ 2 miles south of Locust 

 Gap, there were collected a few species, as follows: 



Neuropteris Pocahontas. ; Sigillaria sp. cf. dentata. 



Neiiropteris Pocahontas var. msequaUs. 1 Trigonocarpum ampuUeeforme. 

 Lepidostrobus pennsylvanicus. I 



C. About '2 miles farther west, along the southern border of the 

 same field, a coal mapped as the same as that wrought at the Gordon 

 and Helphenstein collieries was formerly worked rather extensively 

 by Messrs. Doutv and Baumgartner.^ The species collected from the 

 rock dump are — 



Eremopteris sp. 

 Mariopteris pottsvillea. 

 Sphenopteris asplenioides. 

 Neuropteris Pocahontas var. injequaUs. 



Neuropteris Smithsii. 

 Trigonocarpum ampullseforme. 

 Trigonocarpum Helena?. 

 Carpolithes orizseformis. 



D. Along the ravine extending up the mountain side above the site 

 of the old Enterprise colliery, a coal supposed to be the same Lower 

 Lykens Valley coal was formerh^ worked at the jMount Franklin and 

 the Margie Franklin collieries,* between which lies a narrow anticline. 



From the mine last mentioned the specimens collected include — 



Eremopteris sp. 

 Mariopteris pottsvillea. 

 !Mariopteris cf. tennesseeana. 

 Sphenopteris asplenioides. 

 Sphenopteris microcarpa. 

 Alethopteris prota(juilina. 



Neuropteris Pocahontas var. inaequalis. 

 Neuropteris Smithsii. 

 Lepidodenron alabamense. 

 Whittleseya Campbelli. 

 Trigonocarpum ampullaeforme. 

 Carpolithes orizasformis. 



A review of the species collected from these mines along the south- 

 ern border of the Western Middle Anthracite field shows that we have 

 to do with the same flora as that present at Altamont collier}^ No. 1, 

 within the Southern Anthracite field. In all the collections we find 

 representatives of Mariopter is pottsvillea^ Xeiiropteris Pocaliontas var. 

 liKpfjualls, Neuropteris Smithsii. and Lepidodendron cdabamense^ charac- 

 teristic in the Southern field of the zone of Lykens coal No. 4. The 



1 Vol. Ill, Pt. I, pp. 2058-2060. 



2Atlas Western Middle Anthracite Field Pt. II, mine .sheet v. 

 3 Atlas Western Middle Anthracite Field Pt. II, mine .sheet vi. 



■•Atlas Western Middle Anthracite Field, Pt. II, mine sheet vi; Pt. Ill, cross-section sheets v, vl, 

 section 14. 



