Fire-Clays.
Fire-clay has been found developed and is being worked in Chesterfield,
at Robious; at Dorset, in Powhatan; at Buena Vista, in Rockbridge,
and very fine bricks were on exhibition at the Virginia State fair recently.
Vitrified brick is made at Chilhowie, in Smyth County, and clay has been
found and developed in Louisa County. There are fine tile and brick
works at Chester; terra-cotta and porcelain works at Strasburg, in the
Valley, and Virginia has in large quantity the finest clays of every variety.
Clays and marl are found in close proximity, and in some places intermixed,
which, calcined, make a fine cement, like the Portland and
Roman.
