306 SUPPLEMENT TO DESCRIPTIONS OF SPECIES. 
Sixteen miles from Baltimore, on the Gunpowder. — Graphite. 
Twenty-three miles from B., on the Gunpowder.— Tale. 
Twenty-five miles from B., on the Gunpowder.—Magnctite, sphene, 
pycuite. 
Thirty miles from B., in Montgomery Co., on farm of 8. Eliot.— 
Gold in quartz. 
Hight to twenty miles north of B., in limestone.— Tremolite, augite. 
pyrite, brown and yellow tourmaline. 
Fifteen miles north of B.—Sky-llue chalcedony in granular lime- 
stone. 
Eighteen miles north of B., at Scott’s mills.— Magnetite, cyanite. 
BARE HiLis.—Chromite, asbestus, tremolite, talc, hornblende, ser- 
pentine, chalcedony, meerschaum, baltimorite, chalcopyrite, mag- 
netite. 
CAPE SABLE, near Magothy R.—Amber, pyrite, alum slate. 
CARROLL Co.—Near Sykesville, Liberty Mines, gold, magnetite, 
pyrite (octahedrons), chalcopyrite, linneite (carrollite); at Patapsco 
Mines, near Finksburg, bornite, malachite, siegenite, linneite, reming- 
tonite, magnetite, chalcopyrite ; at Mineral Hill mine, bornite, chalco- 
pyrite, ore of nickel (see above), gold, magnetite. 
CEcIn Co., north part.—Chromite in serpentine. 
Cooptown, Harford Co.—Olive-colored tourmaline, diallage, tale of 
- green, blue, and rose colors, ijniform asbestus, chromite, serpentine. 
DEER CREEK.—Magnctite / in chlorite slate. 
FREDERICK Co.—Old Liberty mine, near Liberty Town, black cep- 
per, malachite, chalcocite, specular iron ; at Dollyhyde mine, bornite, 
chalcopyrite, pyrite, argentiferous galenite in dolomite. 
MONTGOMERY Co.—Ozide of manganese. 
SOMERSET and WORCESTER COs., north part.—Bog-iron ore, vivi- 
anite. 
St. Mary’s RIvER.—Gypsum / in clay. 
PYLESVILLE, Harford Co.—Asbestus mine. 
VIRGINIA, WEST VIRGINIA, AND DISTRICT OF COLUMBIA. 
ALBEMARLE Co., a little west of the Green Mts.—Steatite, graphite, 
galenite. 
AMHERST Co.—Along the west base of Buffalo Ridge, copper ores ; 
on N. W. slope of Friar Mtn., allanite, magnetite, zircon, sipylite. 
Aueusta Co.—At Weyer’s (or Weir’s) cave, sixteen miles north- 
east of Staunton, and eighty-one miles northwest of Richmond, cal- 
cite, stalactites. ; 
BvUCKINGHAM Co.—Gold at Garnett and Moseley mines, also, pyrite, 
pyrrhotite, calcite, garnet; at Eldridge mine (now London and Vir- 
ginia mines) near by, and the Buckingham mines near Maysville, gold, 
auriferous pyrite, chalcopyrite, tennantite, barite ; cyanite, tourmaline, 
actinolite. 
CHESTERFIELD Co.—Near this and Richmond Co., bituminous coal, 
native coke. 
CULPEPPER Co., on Rapidan River.—Gold, pyrite. 
FRANKLIN Co.—Grayish steatite. 
FAvuQUIER Co., Barnett’s mills.—Asbestus, gold mines, barite, cal- 
cite. 
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