24 



NEW YORK STATE MUSEUM 



East from Rochester and extending through Wayne county, the 

 Medina sandstone outcrops as a narrow belt along the lake shore. 

 The formation widens again before Oswego county is reached and 

 quarries have been opened in the red sandstone along the Oswego 

 river at Oswego and the city of Fulton. 



Along the lake shore in the vicinity of Oswego, the Oswego sand- 

 stone, usually considered as basal Medina, outcrops and is quarried 

 for local use. The largest quarry in this section of the State is at 

 Higginsvilie, where a gray sandstone from the upper part of the 

 formation is quarried. The quarried product is shipped by boat on ' 

 the Erie canal. 



In the Mohawk valley, quarries are worked in the Oneida horizon, 

 and the product is chiefly for local use. 



In New York, the Clinton format-ion has its greatest development 

 in the region about Utica. It thins both toward the east and the 

 west. In the Genesee river section the Clinton is constituted of 

 shales and limestones, but in the eastern extension of the formation 

 it becomes thicker and the sandstones predominate. In the 

 Mohawk valley the upper member is a heavy sandstone. This 

 forms a ledge south of the Mohawk in the vicinity of Ilion^and 

 Frankfort, where quarries have been opened. The quarries in the 

 vicinity of Utica furnish much of the foundation stone used in that 

 city. 



Collections. Owing to recent accessions to the exhibit illustrat- 

 ing the mineral resources of the State, it has been necessary to find 

 additional room for its display and this could only be provided by 

 removing the exhibit to the first floor, which has hitherto been used 

 chiefly for storage purposes. The material now on hand has, ac- 

 cordingly, been installed there, and the remaining collections which 

 were sent to the' Lewis and Clark Exposition at Portland, Oregon, 

 will be put in place as soon as they are returned. When com- 

 pletely assembled, the exhibit will illustrate nearly all branches of 

 industrial geology represented in the State. It is not intended, 

 however, to include any but the more important manufactured 

 products, since this would require much more space than is at 

 present available. Some of the principal features of the exhibit, 

 as outlined, are the following: 



A collection of building stones comprising granites, sandstones, 

 slates, limestones and marbles, supplied from New York quarries, 

 numbering 77 specimens. The stones are cut in 10-inch cubes and 

 are displayed on standards in such a way that their several 

 surfaces, which are dressed in different styles, may be readily ob- 

 served. 



A collection of clay materials, exemplifying the various kinds of 

 clay found within the State and the products of their manufacture, 

 such as brick, tile, terra cotta and pottery. 



