T4 NEW YORK STATE MUSEUM 
On Long Island and Staten Island are found local deposits of 
Cretaceous clays, similar to those of New Jersey. They have been 
utilized to some extent for stoneware ard brick by Long Island 
manufacturers, but the principal developrints have been at Kreisch- 
erville and Green Ridge, Staten Island. At Kreischerville, excellent 
grades of fire brick and fancy pressed brick are made from these 
clays. 
Besides the surficial clays, the shale beds which are found in the 
Paleozoic strata, especially of the Devonic system, afford much 
material that is adapted for building and paving brick, terra cotta, 
tile etc. They are utilized mainly in the southern and western sec- 
tions. Among the localities where they are worked are Angola 
and Jewettville, Erie county; Jamestown, Chautauqua county; 
Alfred Center, Allegany county; and Corning, Steuben county. 
At Catskill, on the Hudson, building and paving brick are made 
from Hamilton shale that is dug at Cairo. 
The manufacture of porcelain and chinawares has become an 
important branch of the industry, having shown a quite remarkable 
growth during the last decade. Its importance, however, is ascrib- 
able to the local facilities for assembling the raw materials and 
marketing the finished products. The kaolin and ball clays for the 
purpose are brought in from the southern states, and some of the 
kaolin is imported from England. The quartz and feldspar mostly 
come from New England, though of these materials New York 
possesses considerable resources which would seem to be capable 
of supplying some of the local requirements. 
PRODUCTION OF CLAY MATERIALS 
The accompanying tables give the production of clay materials 
during the last two or three years, the statistics being arranged 
according to items of manufacture and also, so far as practicable, 
according to counties in which the operations were carried on. 
They are based on reports submitted by the individual plants. 
There was some improvement in the conditions affecting the 
clay-working industry last year as compared with those prevailing 
in 1910 and 1911, most noticeable in the increased output of build- 
ing brick, which represents in value about one-half the entire 
production. The gain may be considered as indicative of a more 
normal state of business, after the pronounced depression that 
characterized the previous season, but did not suffice to bring the 
