The Maine and New Hampshire Granite Corporation quarries are at North Jay. The company's office is in the Baxter Building, Congress street, Portland, Me.

The granite (specimen 118, a) is a biotite-muscovite granite of very light gray shade ("white granite"), and fine, even-grained texture, in which the particles range from 0.36 to 3 mm. in diameter, and consist of the following minerals, arranged in descending order of abundance: Potash feldspar (microcline and orthoclase), clear quartz, soda-lime feldspar (oligoclase), black mica (biotite), and white mica (muscovite), together with accessory garnet, magnetite, and apatite. The general whiteness of this rock is due to the quartz not being smoky as in most granites, and also to the whiteness of the feldspars, which is thus visible through the quartz. The feldspars are mostly unaltered. The following chemical analysis of this granite, made by E. T. Rogers, was reported by Prof. John E. Wolff, of Cambridge, Mass., in 1892: °

Analysin of granite from quarry at North Jay.

The same-analyst finds the specific gravity 2.639. A test of the compressive strength of this granite, made for the company at the Watertown Arsenal in 1892, shows that the cube cracked at 15,720 pounds per square inch and was destroyed at 16,310 pounds per square inch. An earlier test of the same granite with somewhat different results was made at that arsenal on May 6, 1882.b It does not take a very good polish, owing to the abundance of mica and the large size of its plates. The North Jay granite was also described by M. E. Wadsworth in 1878.c

The quarry, opened in 1872, consists of three openings, known by the name of " Upper," " Lower," and " Bowlder." The upper quarry measures about 425 feet from north to south by 200 feet from east to west and has an average depth of 20 feet. The lower one, adjacent to it on the west, measures 500 feet from north to south and 350 feet from east to west, with an average depth of about 35 feet. These openings are on the west side of a north-south ridge. The bowlder quarry, a little north of the other two, is about 150 feet square and 20 feet deep. The upper and lower quarries are separated by a mass

10 feet thick, consisting of two large aplite dikes that have a northsouth course. The drainage is natural. There are from 6 inches to 3 feet of loam on the granite surface, but in places it is bare.

Rock structure: In the center of the lower quarry there is a lamination in folds 20 feet broad and 3 feet high, occasioned by the parallelism and abundance of biotite plates along certain planes. Some of these planes show evidence of friction along them. There is also a north-south vertical structure associated with the dikes of aplite between the two quarries. The sheets range from 4 inches to 6 feet in

In the upper 25 feet the sheets are thin, but below that they become gradually thicker. In cross section they feather out alternately, or "toe in," as described on page 35. At the top of the hill and at the east side of the upper quarry they are horizontal, but on the west side they curve over westward, dipping 5°-10°, and possibly a little more in the lower quarry, governing the slope of the hill. At the north side of the lower quarry is a heading striking N. 50°-60° E.. dipping 60° and also 90°. The courses of the various joint systems and dikes are shown in fig. 6. Of joints 15 there are four discontinuous ones in a space of 50 feet in the upper quarry. The rift is horizontal and there is no grain. The pegmatite dikes consist of milk-white potash (microcline) and soda-lime (oligoclase) feldspar, smoky quartz, biotite, and muscovite, and measure up to 2 feet 6 inches. Knots are exceptional and measure up to 12 inches across. Heading A is covered with limonite from oxidation of pyrite. Ferruginous discoloration (sap) is noticeably absent from the sheets.

The plant consists of 8 power and 2 hand derricks, 8 engines, 2 locomotive cranes, 1 compressor (capacity, 762 cubic feet per minute), 4 steam or air drills, 8 pneumatic plug drills, 2 surfacers, 14 pneumatic hand tools, 3 steam pumps, and 2 steam crushers—1 of 200 tons capacity a day, the other of 75 tons.

Transportation is had by gravity track to the Maine Central Railroad, 1,300 feet distant and 300 feet down. This company has devised an ingenious mode of adapting an ordinary platform freight car to the transportation of thin granite blocks 12 feet square.

The product is used for monuments and buildings, and the chief market is the West. Specimen monuments and buildings: General Grant's tomb, Riverside drive, New York; Richard Smith soldiers' and sailors' memorial gateway at Fairmount Park, Philadelphia; entrance to Union Mutual Life Insurance Company's building at Portland, Me.; the Hahnemann monument, in Washington, D. C.; the Chicago and Northwestern Railway building, in Chicago; the Western German Bank, Cincinnati, Ohio, and the Union County court-house, at Elizabeth, N. J.

Rough stone, paving blocks, and crushed stone are important byproducts.

Contracts in 1905: The Westmoreland County (Greenbush) courthouse, Pennsylvania, and an addition to the Marshall Field store in Chicago.

The American Stone Company's quarry is at North Jay, on the east side of the same hill on which the quarry above described is located. Address, Pierce V. C. Miller, secretary American Stone Company, 49 Wall street, New York.

The granite is identical with that of the Maine and New Hampshire Granite Corporation's quarry. (Specimen 118, a.)

The quarry measures about 300 feet from north to south by 200 feet east to west and is of varying depth. A little occasional pumping is necessary for drainage. Stripping, up to 8 feet of till.

Rock structure: An undulating flow structure like that in the previously described quarry, but with a northerly pitch of 10° to 40°, occurs in the northern part of quarry. The sheets are from 6 inches to 3 feet thick and dip 5°-10° E. Vertical joints strike N. 65°-70° E.; also N. 75°-80° W. The latter form a discontinuous heading in middle of quarry. Coarse pegmatite dikes up to 2 feet thick have courses of N. 60° E., north to south, and N. 20° E.

The plant consists of 3 derricks and 3 engines, 4 steam drills, 2 pumps, and 1 gas engine for same.

Transportation is effected by gravity to railroad seven-eighths mile distant.