35G 



NEW YORK STATE MUSEUM 



same purpose in the cliff southeast of the Lutheran cemetery in 

 Schoharie. Near Barnerville the Coeymans is extensively quar- 

 ried for building purposes. Rocks for foundations have also been 

 obtained from the heavy bedded Manlius in the various quarries 

 behind Schoharie, but all such work is carried on at present only 

 on a small scale. The Becraft limestone, the purest and best of 

 the region has scarcely been utilized. 



A quarry has been opened in the Becraft by Mix & O'Reilly, on 

 the slope of East hill above Schoharie, and another, now aban- 

 doned, is found where this rock has reached the lowland level 

 near Frisby's Mills. No analysis of the rock has been obtained, 

 but judging from its similarity to that of Becraft mountain and 

 other localities in the Helderbergs, it would appear that it is 

 admirably fitted for use in chemical works, or for the manufac- 

 ture of Portland cement. 



The Oriskany rock has been used for stone fences and locally 

 to a slight extent for foundations, but it is not well adapted to 

 building purposes on account of the readiness with which it dis- 

 integrates. The Esopus has been used locally for road mending 

 but with little success. It disintegrates however into good soil 

 and has yielded a local covering of soil for the Oriskany quart- 

 zite. The Onondaga, though outcropping on all the hillsides 

 above Middleburg and Oobleskill, has not been exploited to the 

 extent one would expect. At the town last mentioned are exten- 

 sive quarries of the rock though mostly abandoned. Some quar- 

 rying operations in this rock have also been carried on along the 

 banks of the small stream which joins the Schoharie kill at Davis 

 crossing. 



The Hamilton sandstones are locally used for foundations, but 

 on the whole not much material of value is obtained from this 

 formation in the Schoharie region. In Albany county however 

 several extensive flagstone or bluestone quarries have been opened 

 in the upper beds of this formation. The nearest are in the vicin- 

 ity of Reidsville, South Berne and Kensselaerville. 



The Sherburne, Ithaca, Oneonta and Catskill formations have 

 also yielded flagstones, or sandstones for building purposes but 



