Clarke — Oneonta, Ithaca and Portage Groups. 



75 



Seneca Lake Section. 



Station XIII. The village of Havana (now called Montour Falls), 

 Schuyler county. Montour creek enters the village from the w est with a ver- 

 tical fall of 165 feet (Montour Falls, Plate I); above this are a series of smaller 

 cascades which together make the total fall of the creek from above the bridge 

 on the west hill to the village street, 195 feet. The falls proper, or the lower 

 escarpment, are shown in plate I. The steepness of the rock wall here renders 

 a close analysis of its composition difficult, but a great part of the series is 

 exposed in a more accessible condition along the road, which winds up the 

 hill and crosses the stream above the falls As a whole the rocks are greenish, 

 sandy shales with thin, sandy flags, abundantly marked with crustacean tracks. 



The first fossiliferous horizon was found at an elevation of 110 feet above 

 the main 'street, and the fossils here occurring re-appear at an horizon just 

 above the top of the falls (165 feet), in both instances in a soft, argillaceous 

 shale. The species obtained were : 



Amboccelia umbonata (cc). 



Spvrifer mucronatuft, small varicose variety (cc). 



Strophalosia trv/ncata. 



Prodfictella spinvlicosta (cc). 



Leptost/rophia mucronata (cc). 



Manticoct-ras Patersorri (c). 



loxonema cf. Xoe. 



Gladoclion us. 



Artluraeaniha. 



Cyclopteris. 



Seventy-five feet higher the rocks become much more sandy, heavy layers 

 of sandstone being frequent, and in two places these have been worked for 

 flag and foundation stone of an inferior quality. Here I/u/mdica/rcUvm fragile 

 occurs in great abundance. 



Station XIV. Havana Glen. This well-known and beautiful ravine is 

 situated one and one-half miles south of the village of Havana, and about 

 three miles south of the celebrated AVatkins Glen, at Watkins, which it equals 

 in natural beauty. Although the public are admitted to its attractions only 

 upon the payment of a fee, I was indebted to the proprietors for liberty to 

 come and go at will, and to make as much debris as was necessary for the 

 examination I had in hand. 



The frequent abrupt cliffs and high falls throughout the gorge do not 

 facilitate the careful examination of the strata, but the artificial means of 



