168 Report on the Geological Survey of Connecticut. 
Stone Paints.—These are made from soapstone at Greenwich, 
where fifty tons were ground in 1835. Serpentine and sulphate of 
barytes are also used. 
Architectural Materials.—'The building stone of Connecticut, 
both ornamental and common, constitute one of the most valuable 
resources of the State, whether considered as affording a supply to 
its own wants, or materials for exportation. ‘The principal kinds at 
present in use are granite (the term being used in its widest sense,) 
gneiss, sandstone, marble, sandstone-conglomerate and trap. ‘The 
two last mentioned are employed only as a common building material. 
“The ornamental granite found in the State presents numerous 
varieties ;, in treating of which, it will be convenient to refer them to 
several general types under distinct names. 1. Gray granite. 2. 
White granite. 3. Flesh colored granite. 4. Red granite. 5. 
Epidotic granite. 6. Porphyritic granite. Green porphyritic 
granite. Gray porphyritic granite. 7. Chloritic granite. 8. 
Sienttic granite. ‘The gray granite is the most abundant and the 
most useful. A beautiful granite of this kind is wrought at Water- 
ford. 
*¢ Mine-hill in Roxbury has been much resorted to, for a more shis-_ 
tose and lighter colored granite (strictly gneiss) than that just deseri- 
bed. It is easily obtained in very large tabular blocks, and might 
with as much propriety be embraced under flagging stones, as it Is 
employed for paving as well as for building stone. Its leading use, 
however, is for underpinning and for stepping stones. At present, it 
employs but two or three hands. A similar use is made of the Wil- 
limantic quarry and of several others. ‘The quarries in Greenwich 
afford several light colored varieties of gray granite, but are wrought 
almost exclusively as a common building stone, and are taken i in 
large quantities to New York city. 
“‘ Other localities deserving to be indicated as likely to furnish val- 
uable deposits of this stone, are the following: Stonington, Groton, 
the country between Norwalk and Darien, North Fairfield, north 
part of Wilton, region in vicinity of Torringford and Wolcottville, 
Winsted, western part of New Milford, Canada village (Goshen,) 
Warren, Marlborough, and Voluntown. 
‘¢ There is but one quarry of the white granite which is wrought at 
present. It isin Plymouth, near the woolen manufactory of Mr. 
Henry Terry. The bed is extensive, forming apparently the west- 
ern side of a hill, which is above a mile long, though concealed to a 
