78 



Report of the State Geologist. 



Productella spinuUcosta (cc). 

 Leptostrophia mueronata (c). 

 Spirifer subumbona. 

 Chonetes lepida. 

 Cladochonus. 



XIV*. In the bed of the stream, at an elevation of 273 feet, are sandy 

 layers with some calcareous matter in which Cladochonus is abundant, together 

 with the following species : 



Leptostrophia m ucronata. 



Chonetes lepida. 



Sckizophoria impressa, small form. 

 JBuchiola speciosa. 



I/anulicardiwm ? sp. indes., with spines (see XIV 4 ). 

 L. ornatum. 



Above this horizon few traces of fossils were found. At the top of the 

 "Summit Cascade, 1 ' elevation 319 feet (Plate VII), Manticocer'OS Patersoni 

 appeared, but no other species were observed. This is the top of the gorge, 

 the rise beyond this point being very gradual and without striking features or 

 rock exposures. The top of the hill on the north bank of the stream has an 

 elevation of 425 feet above the entrance to the ravine. 



On the highway going north from Havana to Watkins exposures of the 

 lower beds shown in the Montour falls escarpment are seen for a mile and a 

 half. The actual elevation of Havana is about 467 feet A. T. ; that is not 

 more than twenty feet above Seneca lake, from which the water sets back into 

 the now abandoned Chemung canal as far as the first lock just north of 

 Havana. 



At the salt works on the lake (Salt Point), one and a half miles north of 

 Watkins, and twenty feet above the lake, where an excavation has been made 

 for the erection of water tanks, there is an outcrop of sandstone bearing 

 Cladochonus abundantly. "With an allowance for dip of twenty feet per mile, 

 w hich is sufficiently large in this section, this outcrop corresponds in elevation 

 to the stations at XIII and XIV 3 . 



Station XV. At Glenora, on the west shore of Seneca lake, ten miles due 

 north of Havana, is the mouth of Big Stream, which has cut a deep and rather 

 difficultly accessible gorge for upwards of two miles. The opening of this 

 ravine at Glenora is bordered by a high escarpment (125 feet), making a 

 large and beautiful amphitheatre. The beds are quite regularly alternating 

 sands and shales, and contain, sparingly, the following fossils: 



