622 



Report of the State Geologist. 



feet above the creek level. A little above, is the foot of the hotel stairs on 

 the heavy bed two and one-half feet above its base. Opposite the hotel 

 stairs, this bed is not as sharply shown as in the gorge above, on account of 

 the presence of soil and debris, but it has a thickness of at least eight feet. 

 Rather more than half way from the hotel stairs to Sherman fall, the gorge 

 becomes very narrow and may appropriately be called the Narrows. This 

 part of the glen is well shown in Darton's picture of the " Lower Gorge at 

 Trenton Falls."* At the Narrows the dip is 3° S., but it is variable in this 

 part of the glen. At this point the base of A 2 is twenty-four feet above the 

 creek level, giving the greatest thickness of the lower rocks found in this 

 part of the gorge. This heavy stratum is readily followed along the side of 

 the gorge from the hotel stairs to the Narrows, and may be traced by the eye 

 along the eastern bank nearly all of the distance to the place where it forms 

 the conspicuous bed in the upper part of Sherman fall. Its base is the 

 second noticeable line below the top of the eastern part of Sherman fall. 

 This bed was also traced along the western bank from the Narrows to Sher- 

 man fall, where it meets the same bed of the eastern side in the mural front 

 of the fall. At the Narrow s and in the cliff opposite Sherman fall it has a 

 thickness of ten feet. This zone is No. 4 of Mr. White's section, which he 

 described as it occurs at the hotel stairs, but he failed to trace it up the gorge 

 to Sherman fall. White's No. 7, described as "the broad seam seen in 

 Sherman fall," is the same as his No. 4 ; and Nos. 5 and 6, given as between 

 Nos. 4 and 7, belong below No. 4. 



u 1 3 . Fr< »m the top of the heavy bed to the base of the dark blue if i et 46 

 massive stratum above Sherman fall. The rocks consist of thin layers of 

 limestone with shaly partings and are well shown in the cliff along the path 

 opposite the top of Sherman fall. In the upper part, corresponding to D 10 

 of White, are abundant fossils, as may be seen from the list below. 



1. Mbnticulippra (jPrasopora) 1/ycoperdon (Say). (r) 



2. Diplograptiis amplexicaulis, Hall. (r) 



3. Trematis term/ unit* (Emmons), Hall. (r) 



4. Rafmesquina alternata (Con.), H. and C. (r) 



5. Strqphoniena cf. 8cofiel<M, Winch, and Schuch.f (r) 



6. Orthis (Platysftrophia) Mforata (Schl.), Bill. (r) 



7. OrtJtis (Dalmanella) testudinaria, Dal. (c) 



8. Plectambonites serieea (Sow)).), H. and C. (aa) 



•Thirteenth Annual Report of the State Geologist [New York], 1894, p. 11. See also Plates I and II of the present paper. 

 1 Kindly determined by Professor J. M. Clarke. 



