214 Report of the State Geologist. 



the creek valley at this locality, so that the thickness of the Sherburne and 

 Ithaca formations in the hill to the south of Maryland is less than (300 feet. 



XXII A. In the vicinity of Maryland village, two brooks enter Sche- 

 nevus creek from the north; Whitney brook, which flows through the eastern 

 part of the village, and Morehouse brook, about three-fifths of a mile farther 

 west. Their general direction is to the southwest, each side being flanked 

 by very steep hills. The hill forming the divide between them is especially 

 steep and narrow, and is know n in that region as Little Crumhorn mountain. 

 Along Whitney brook, after reaching an altitude of seventy feet above Sche- 

 nevus creek, are frequent ledges and cliffs of rocks until the upper part of its 

 course is reached. From these outcrops the following section along this brook 

 was constructed, the divisions being characterized as follows : 



The first outcrop is seventy feet above Schenevus creek level, where a 

 stratum of blue sandstone (A 2 ), two and one-half feet thick, crosses the brook. 

 No fossils were found, but it has the usual lithologic characters of the rather 

 heavy layers of Hamilton sandstone. 



XXII A?. For thirty feet above the first sandstone stratum there are 

 numerous outcrops of shaly sandstones, shales and bluish sandstones along 

 the bed and banks of the brook about one-quarter of 'a mile northeast of 

 Maryland village. Some of the beds are of typical Hamilton character, con- 

 taining a great abundance of Hamilton species, while others are thin, rather 

 even sandstones, with a greenish rather than bluish tint, resembling con- 

 siderably some of the Ithaca layers of Tompkins and Cortland counties. 

 Some of the layers containing abundant Hamilton fossils are of a very dark 

 color, almost black. The fauna is as follows: 



1. Spvrifer granulosus (Con.), Hall. (a) 



2. Spirifer Tullius, Hall. (r) 



3. Cyrt/ina Ilaiiiiltoiiensis, Hall. (r) 



4. Tropidoleptvx rarinatus (Con.), Hall. (c) 



5. Mod/iomorpha concentrica (Con.), Hall. (rr) 



6. PKtkonia sectifrons (Con.), Hall (?). (rr) 



7. Athyris spiriferoides (Eaton), Hall. (rr) 

 n. Puht'onvilo in iita. Hall. (rr) 

 '.». Granionysia l>ixii!<'<tfn (Con.), Hall. (rr) 



Loose on the highway to Hie west of the brook and higher than A :i . the 

 following species were collected : 



I. Nuoula bellhtiriata (Con.), Hall. (r) 

 •2. ralceoneilo constrwta (Con.), Hall. (rr) 



