194 



Report of the State Gteologist. 



XXIV A 1 . Shales and thin blue sandstones by the side of the highway 

 along Lake brook, one-half mile northwest of Laurens. This locality is about 

 three miles southwest of the "Owl Patch" (XXIV B 2&3 ), and 110 feet above 

 the main street of Laurens. In some layers there are plenty of fossils, 

 especially Spirifer m/ucronatus (Con.), Bill. The complete list is as follows : 



1. Spirifer mucronatus (Con.), Bill. (a) 



2. Tropidoleptus carmatus (Con.), Hall. (rr) 



3. Atrypa reticularis (Linne), Dal. 



4. Conularia widulata, Con. (it) 



5. Aihyris Cora, Hall (?). (rr) 



XXIV A 2 . Coarse, arenaceous shales on hill, one and four-tenths miles 

 northwest of Laurens and 260 feet above the main street. They form a 

 prominent outcrop in the field on the eastern side of the east and w est cross- 

 road, and contain numerous specimens of Atrypa reticularis and Spi/rophyton. 



The list is : 



1. Atrypa reticularis (Linne), Dal. (a) 



2. Cyrtina Hamiltonensis, Hall. (rr) 



3. Productella, sp. (c) 



4. Actinopteria decnvssata, Hall (?). (rr) 



5. Spirophyton, sp. (rr) 



These shales of XXIV A 1 and A 2 , resemble those of the Hamilton group 

 more than they do those of the Ithaca formation. 



Hartwick. 



Hartwick township lies east of New Lisbon and Burlington, and north 

 of Laurens and Milford townships, its southern half extending eastward to 

 the Susquehanna river. The topography of the southern half exhibits steep 

 hills bordering narrow valleys, the most important of which is the Sus- 

 quehanna. 



XXIV < Ki . In the southern part of the township, two and one-half 

 miles northeast of the village of Mt. Vision, is a high hill, known as Bowie 

 hill, the summit of which is approximately 750 feet higher than the valley 

 of Otego creek at Mt. Vision. Above the top of Mt. Vision which, as alrea<l\ 

 Stated, is in the Hamilton, the rocks are mostly covered by drift, At the 

 school-house No. 15, on the road directly south of Bow ie hill, are bluish, 

 argillaceous shales, very similar to the Sherburne formation, in which only a 

 single specimen of ( Itonetes, net iy era, Hall, w as found. 



