THE BUILDING STONE SUPPLY.

The use of stone as a building material was not resorted to, except to

a trifling extent, in this country until long after the need of such a

solid substance was felt. The early settler contented himself with the

log cabin, the corduroy road, and the wooden bridge, and loose stone

enough for foundation purposes could readily be gathered from the

surface of the earth. Even after the desirability of more handsome and

durable building material for public edifices in the colonial cities

than wood became apparent, the ample resources which nature had afforded

in this country were overlooked, and brick and stone were imported by

the Dutch and English settlers from the Old World. Thus we find the

colonists of the New Netherlands putting yellow brick on their list

of non-dutiable imports in 1648; and such buildings in Boston as are

described as being "fairly set forth with brick, tile, slate, and

stone," were thus provided only with foreign products. Isolated

instances of quarrying stone are known to have occurred in the last

century; but they are rare. The edifice known as "King's Chapel,"

Boston, erected in 1752, is the first one on record as being built from

American stone; this was granite, brought from Braintree, Mass.

Granite is a rock particularly abundant in New England, though also

found in lesser quantities elsewhere in this country. The first granite

quarries that were extensively developed were those at Quincy, Mass.,

and work began at that point early in the present century. The fame of

the stone became widespread, and it was sent to distant markets--even to

New Orleans. The old Merchants' Exchange in New York (afterward used as

a custom house) the Astor House in that city, and the Custom House in

New Orleans, all nearly or quite fifty years old, were constructed of

Quincy granite, as were many other fine buildings along the Atlantic

coast. In later years, not only isolated public edifices, but also whole

blocks of stores, have been constructed of this material. It was from

the Quincy quarries that the first railroad in this country was built;

this was a horse-railroad, three miles long, extending to Neponset

River, built in 1827.

Other points in Massachusetts have been famed for their excellent

granite. After Maine was set off as a distinct State, Fox Island

acquired repute for its granite, and built up an extensive traffic

therein. Westerly, R.I., has also been engaged in quarrying this

valuable rock for many years, most of its choicer specimens having been

wrought for monumental purposes. Statues and other elaborate monumental

designs are now extensively made therefrom. Smaller pieces and a coarser

quality of the stone are here and elsewhere along the coast obtained in

large quantities for the construction of massive breakwaters to protect

harbors. Another point famous for its granite is Staten Island, New

York. This stone weighs 180 pounds to the cubic foot, while the Quincy

granite weighs but 165. The Staten Island product is used not only for

building purposes, but is also especially esteemed for paving after both

the Russ and Belgian patents. New York and other cities derive large

supplies from this source. The granite of Weehawken, N.J., is of the

same character, and greatly in demand. Port Deposit, Md., and Richmond,

Va, are also centers of granite production. Near Abbeville, S.C., and

in Georgia, granite is found quite like that of Quincy. Much southern

granite, however, decomposes readily, and is almost as soft as clay.

This variety of stone is found in great abundance in the Rocky

Mountains; but, except to a slight extent in California, it is not yet

quarried there.

Granite, having little grain, can be cut into blocks of almost any size

and shape. Specimens as much as eighty feet long have been taken out and

transported great distances. The quarrying is done by drilling a series

of small holes, six inches or more deep and almost the same distance

apart, inserting steel wedges along the whole line and then tapping each

gently with a hammer in succession, in order that the strain may be

evenly distributed.

A building material that came into use earlier than granite is known as

freestone or sandstone; although its first employment does not date back

further than the erection of King's Chapel, Boston, already referred to

as the earliest well-known occasion where granite was used in building.

Altogether the most famous American sandstone quarries are those at

Portland, on the Connecticut River, opposite Middletown. These were

worked before the Revolution; and their product has been shipped to many

distant points in the country. The long rows of "brownstone fronts" in

New York city are mostly of Portland stone, though in many cases the

walls are chiefly of brick covered with thin layers of the stone. The

old red sandstone of the Connecticut valley is distinguished in geology

for the discovery of gigantic fossil footprints of birds, first noticed

in the Portland quarries in 1802. Some of these footprints measured

ten to sixteen inches, and they were from four to six feet apart. The

sandstone of Belleville, N.J., has also extensive use and reputation.

Trinity Church in New York city and the Boston Atheneum are built of the

product of these quarries; St. Lawrence County, New York, is noted also

for a fine bed of sandstone. At Potsdam it is exposed to a depth of

seventy feet. There are places though, in New England, New York, and

Eastern Pennsylvania, where a depth of three hundred feet has been

reached. The Potsdam sandstone is often split to the thinness of an

inch. It hardens by exposure, and is often used for smelting furnace

hearth-stones. Shawangunk Mountain, in Ulster County, yields a sandstone

of inferior quality, which has been unsuccessfully tried for paving;

as it wears very unevenly. From Ulster, Greene, and Albany Counties

sandstone slabs for sidewalks are extensively quarried for city use;

the principal outlets of these sections being Kingston, Saugerties,

Coxsackie, Bristol, and New Baltimore, on the Hudson. In this region

quantities amounting to millions of square feet are taken out in large

sheets, which are often sawed into the sizes desired. The vicinity of

Medina, in Western New York, yields a sandstone extensively used in that

section for paving and curbing, and a little for building. A rather poor

quality of this stone has been found along the Potomac, and some of it

was used in the erection of the old Capitol building at Washington.

Ohio yields a sandstone that is of a light gray color; Berea, Amherst,

Vermilion, and Massillon are the chief points of production. St.

Genevieve, Mo., yields a stone of fine grain of a light straw color,

which is quite equal to the famous Caen stone of France. The Lake

Superior sandstones are dark and coarse grained, but strong.

In some parts of the country, where neither granite nor sandstone

is easily procured, blue and gray limestone are sometimes used for

building, and, when hammer dressed, often look like granite. A serious

objection to their use, however, is the occasional presence of iron,

which rusts on exposure, and defaces the building. In Western New York

they are widely used. Topeka stone, like the coquine of Florida and

Bermuda, is soft like wood when first quarried, and easily wrought,

but it hardens on exposure. The limestones of Canton, Mo., Joliet and

Athens, Ill., Dayton, Sandusky, Marblehead, and other points in Ohio,

Ellittsville, Ind., and Louisville and Bowling Green, Ky., are great

favorites west. In many of these regions limestone is extensively used

for macadamizing roads, for which it is excellently adapted. It also

yields excellent slabs or flags for sidewalks.

One of the principal uses of this variety of stone is its conversion, by

burning, into lime for building purposes. All limestones are by no

means equally excellent in this regard. Thomaston lime, burned with

Pennsylvania coal, near the Penobscot River, has had a wide reputation

for nearly half a century. It has been shipped thence to all points

along the Atlantic coast, invading Virginia as far as Lynchburg, and

going even to New Orleans, Smithfield, R.I., and Westchester County,

N.Y., near the lower end of the Highlands, also make a particularly

excellent quality of lime. Kingston, in Ulster County, makes an inferior

sort for agricultural purposes. The Ohio and other western stones yield

a poor lime, and that section is almost entirely dependent on the east

for supplies.

Marbles, like limestones, with which they are closely related, are very

abundant in this country, and are also to be found in a great variety of

colors. As early as 1804 American marble was used for statuary purposes.

Early in the century it also obtained extensive employment for

gravestones. Its use for building purposes has been more recent than

granite and sandstone in this country; and it is coming to supersede the

latter to a great degree. For mantels, fire-places, porch pillars, and

like ornamental purposes, however, our variegated, rich colored and

veined or brecciated marbles were in use some time before exterior walls

were made from them. Among the earliest marble buildings were Girard

College in Philadelphia and the old City Hall in New York, and the

Custom House in the latter city, afterward used for a sub-treasury. The

new Capitol building at Washington is among the more recent structures

composed of this material. Our exports of marble to Cuba and elsewhere

amount to over $300,000 annually, although we import nearly the same

amount from Italy. And yet an article can be found in the United States

fully as fine as the famous Carrara marble. We refer to that which comes

from Rutland, Vt. This state yields the largest variety and choicest

specimens. The marble belt runs both ways from Rutland County, where

the only quality fit for statuary is obtained. Toward the north it

deteriorates by growing less sound, though finer in grain; while to

the south it becomes coarser. A beautiful black marble is obtained at

Shoreham, Vt. There are also handsome brecciated marbles in the same

state; and in the extreme northern part, near Lake Champlain, they

become more variegated and rich in hue. Such other marble as is found

in New England is of an inferior quality. The pillars of Girard

College came from Berkshire, Mass., which ranks next after Vermont in

reputation.

The marble belt extends from New England through New York, Pennsylvania,

Maryland, the District of Columbia, and Virginia, Tennessee, and the

Carolinas, to Georgia and Alabama. Some of the variegated and high

colored varieties obtained near Knoxville, Tenn., nearly equal that of

Vermont. The Rocky Mountains contain a vast abundance and variety.

Slate was known to exist in this country to a slight extent in colonial

days. It was then used for gravestones, and to some extent for roofing

and school purposes. But most of our supplies came from Wales. It is

stated that a slate quarry was operated in Northampton County, Pa., as

early as 1805. In 1826 James M. Porter and Samuel Taylor engaged in the

business, obtaining their supplies from the Kittanninny Mountains. From

this time the business developed rapidly, the village of Slateford being

an outgrowth of it, and large rafts being employed to float the product

down the Schuylkill to Philadelphia. By 1860 the industry had reached

the capacity of 20,000 cases of slate, valued at $10 a case, annually.

In 1839 quarries were opened in the Piscataquis River, forty miles

north of Bangor, Me., but poor transportation facilities retarded the

business. Vermont began to yield in 1852. New York's quarries are

confined to Washington County, near the Vermont line. Maryland has

a limited supply from Harford County. The Huron Mountains, north of

Marquette, Mich., contain slate, which is also said to exist in Pike

County, Ga.

Grindstones, millstones, and whetstones are quarried in New York, Ohio,

Michigan, Pennsylvania, and other States. Mica is found at Acworth and

Grafton, N. H., and near Salt Lake, but our chief supply comes from

Haywood, Yancey, Mitchell, and Macon counties, in North Carolina, and

our product is so large that we can afford to export it. Other stones,

such as silex, for making glass, etc., are found in profusion in various

parts of the country, but we have no space to enter into a detailed

account of them at present.--_Pottery and Glassware Reporter_.

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Scientific American Supplement, No. 360, November 25, 1882 · 第 38 / 60 题