of Eastern Pennsylvania. 219 



states " it seems probable that the 600' of grayish green beds 

 at the top of the Chemung in Pike and Monroe which in G 6 

 were referred to the Catskill, under the name of Starucca 

 beds, may be the equivalent of a portion of the Upper Chemung 

 of this district [Susquehanna river region], and therefore 

 erroneously referred to the Catskill in G 6 ."* In the letter 

 mentioned above Professor White writes that 600' of sand- 

 stones which in G 6 were put in the Catskill should be added to 

 the Chemung. Referring to the difficulty in separating the 

 Chemung and Catskill the Professor says, " I think the only 

 possible separation of Chemung and Catskill is that founded 

 upon physical characteristics and in my opinion we should 

 separate them at the horizon of the lowest red beds, for these 

 seem to come in at about the same general zone everywhere, 

 and it is the only possible means of separation." The Starucca 

 sandstone is well exposed at Spragueville and in the first D. 

 L. & W. R. R. cut north of the station. 



The second railroad cut, just north of the Brodhead creek 

 railroad bridge, is in the New Milford red shale, which is now 

 regarded by Professor White as forming the base of the Cats- 

 kill. The red shales alternate with gray shales and sandstones 

 as far as the " High Bridge " over the West Branch of Brod- 

 head creek where the Delaware river flags of White are reached. f 

 At the southern end of the first railroad cut north of " High 

 Bridge," in the lower part of the Delaware flags, a greenish- 

 giay sandstone contains many impressions of Orthonota (?) 

 parvula Hall,;}: a species that occurs in the upper Hamilton 

 shales of Schoharie county, New York, as well as frequently 

 in the argillaceous Hamilton shales of central and western New 

 York. "There is also a breccia which contains fragments of 

 brachiopod shells and fish bones. At the northern end of the 

 cut are coarse, grayish, arenaceous shales in which fern- stipes 

 occur, and one poorly preserved frond of Archwopteris minor 

 Lx. (?) was found. 



The Delaware flags are succeeded by the Montrose red 

 shale in the vicinity of Henryville,§ and overlying these 

 shales are the Honesdale sandstones. Near the transition from 



*G 7 , p. 73. fSee G 6 , p. 100. 



% Dr. Charles E. Beecher has seeri these specimens and agrees with the above 

 identification. Dr. J. M Clarke has kindly compared some of the specimens with 

 the types in the New York State Museum at Albany, aud writes: " 1 see no 

 reason why the shells in question should not be regarded as Orthonota (?) parvula 

 in accordance with your identification; I have compared them with the types of 

 0. (?) parvula and can find no distinctive characters." 



§ From the railroad cut in the red shale, just south of Henryville station, 

 Prof. White reported Archwopteris Jacksoni Dn. (G 6 , pp 103, 320). No speci- 

 mens were found by the writer and the only fossils seen in the shale were 

 fucoidal (?) fragments, which are frequently seen in the red shales of the Che- 

 munsr and Catskili. 



