350 SUPPLEMENT TO DESCRIPTIONS OF SPECIES. 
New Britain.—Dolomite, galenite, blende, malachite. 
CHESTER CO.—AVONDALE.-—-Asbestus, tremolite, garnet, opal. 
CARBON CO.-—-SumMmitT HILL, in coal mines.—-HKaolinite. 
~ BrruMincHam TownNsHIP. —- Amethyst, smoky quartz, serpentine, 
beryl; in Ab’m Darlington’s lime quarry, calcite. 
East BRADFORD.-—Near Buffington’s bridge, on the Brandywine, 
green, blue, and gray cyanite, the gray cyanite found loose in the 
soil, in crystals ; on the farms of Dr. Elwyn, Mrs. Foulke, Wm. Gib- 
bons, and Saml. Entrikin, amethyst. At Strode’s mill, asbestus, mag- 
nesite, anthophyllite, epidote, aquacrepitite, oligoclase, drusy quartz, 
collyrite ? on Osborne’s Hill, wad, manganesian garnet (massive), sphene 
schorl ; at Caleb Cope’s lime quarry, fetid dolomite, necronite, garnets, 
blue cyanite, yellow actinolite in talc ; near the Black Horse Inn, imdu- 
rated talc, rutile ; on Amos Davis’s farm, orthite / massive, from a grain 
to lumps of one pound weight; near the paper-mill on the Brandy- 
wine, zircon, associated with titaniferous tron in blue quartz. 
West BRADFORD.-—-Near the village of Marshalton, green cyanite, 
rutile, scapolite, pyrite, staurolite ; at the Chester County Poor-house 
limestone quarry, chesterlite / in crystals implanted on dolomite, ru- 
tile / in brilliant acicular crystals, which are finely terminated, calcite 
in scalenohedrons, zoisite, damourite? in radiated groups of crystals 
on dolomite, guartz crystals ; on Smith & McMullin’s farm, epidote. 
CHARLESTOWN.——Pyromorphite, cerussite, galenite, quartz. 
CovENTRY.—Allanite, near Pughtown. 
SouTH CovEnTRY.—-In Chrisman’s limestone quarry, near Coventry 
village, augite, sphene, graphite, z¢rcon in iron ore (about half a mile 
from the village). 
EAst FALLOWFIELD.—Soapstone. 
East GOsHEN.-—-Serpentine, asbestus, magnetite (lodestone), gar- 
net. 
ELK.—-Menaccanite with muscovite, chromite ; at Lewisville, black 
tourmaline. 
West GosHEN.—-On the Barrens, one mile north of West Chester, 
amianthus, serpentine, cellular quartz, jasper, chalcedony, drusy 
quartz, chlorite, marmolite, indurated talc, magnesite in radiated crys- 
tals on serpentine, hematite, asbestus; near R. Taylor’s mill, chromite 
in octahedral crystals, deweylite, radiated magnesite, aragonite, stawro- 
lite, garnet, asbestus, epidote ; zoisite on hornblende at West Chester 
water-works (not accessible at present). 
NEw GARDEN.—At Nivin’s limestone quarry, brown tourmaline, ne- 
cronite, scapolite, apatite, brown and green mica, rutile, aragonite, 
jibrolite, kaolinite, tremolite. 
KENNETT.—<Actinolite, brown tourmaline, brown mica, epidote, tre- 
molite, scapolite, aragonite ; on Wm. Cloud’s farm, sunstone! / cha- 
bazite, sphene. At Pearce’s old mill, zoisite, epidote, sunstone ; sun- 
stone occurs in good specimens at various places in the range of horn- 
blende rocks running through this township from N. E. to8. W. 
LOWER OXFORD.--Garnets, pyrite in cubic crystals. 
London GrovE.—Rutile, jasper, chalcedony (botryoidal), large and 
rough quartz crystals, epidote ; on Wm. Jackson’s farm, yellow and 
black tourmaline, tremolite, rutile, green mica, apatite; at Pusey’s 
quarry, rutile, tremolite. F 
East MARLBOROUGH.—-On the farm of Bailey & Brother, one mile 
