366 
[Assembly 
Bidlding and Flagging Stones. 
Red sandstone prevails in the northern half of the county, and is ex- 
posed almost constantly along the Erie canal, from Holley to Medina. 
North of the canal it is seen in the banks or beds of the creeks, and in 
other situations near the surface, which it immediately underlies. It 
has been mentioned in the preceding pages, as frequently soft and ar- 
gillaceous, and not durable: yet there are courses of this rock which are 
more dense, or siliceous, and furnish an excellent material for building. 
A little north and west of Medina is a quarry, which was worked 
during the past summer, and furnished a handsome pink coloured sand- 
stone in large slabs and blocks, with smooth surfaces and of good tex- 
ture. 
The freestone was quarried on Otter creek, about two miles south of 
Eagle harbor, for some of the works on the Erie canal. At this quarry 
the layers are thick, hard, not slaty, nor argillaceous as elsewhere, and 
yet it crumbles upon exposure. 
In the south-east part of the village of Albion, a quarry was in ope- 
ration, which furnished rock of a reddish or variegated description, in- 
tended for buildings. The same quarry also furnished courses of a gray 
sandstone of a firmer texture, with less argillaceous matter, and altoge- 
ther more durable. 
The upper layers of the sandstone near Albion consists of a grayish 
sandy rock, which is preferred for the corner stones of buildings. The 
upper layers at Medina and Holley are very siliceous, and too hard to be 
wrought with advantage. For foundations and rough work they are 
well adapted, and are of a texture to withstand the effects of moisture, 
frost, and all other exposure. 
The sandstone or freestone was also employed in the construction of 
the culvert over Sandy creek at Holley, but the arch below showing 
a tendency to disintegration, a new arch, composed of limestone, was 
subsequently built within, in order to sustain the first. Hood's quarry 
is on lot 31, in Clarenden, about one mile south-east of Holley. We 
have already mentioned that it was quarried near the mouth of Oak Or- 
chard creek, and used in the works pertaining to the harbor. 
The rock under consideration is mostly inclined to disintegration upon 
exposure to the weather, although quite firm when first quarried. In this 
respect it resembles the sandstone of the Genesee river, below Roches- 
ter, of which it is a continuation. The surface of the layers at sono* 
