g-50 SUPPLEMENT TO DESCRIPTIONS OF SPECIES. 



New Britain. — Dolomite, galenite. blende, malachite. 



CARBON CO. — Summit Hill, in coal mines. — Kaolinite. 



CHESTER CO. — AVONDALE. — Asbestus, tremolite, garnet, opal. 



Birmingham Township. — Amethyst, smoky quartz, serpentine, 

 "beryl ; in Ab'm Darlington's lime quarry, calcite. 



East Bradford. — Near Burlington'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. Ehvyn, Mrs. Foulke, Win. Gib- 

 bons, and Saml. Entrikin, amethyst. At Strode's mill, asbestus, mag- 

 ncsite, anthophyllite, epidote, aquae repitite, oligoclase, drusy quartz, 

 collyrite f on O.-bome'sHill, wad, manganesian ga/rnet (massive), sphene 

 schorl ; at Caleb Cope's lime quarry, fetid dolomite, necronite, garnets, 

 blue cyanite, yellow actinolite in talc; near the Black Horse Inn, indu- 

 rated iedc, rutile ; on Anios 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 iron in blue quartz. 



West Bradford. — Near the yillage of Marshalton, green cyanite, 

 rutile, scapolite, pyrite, staurolite ; at the Chester County Poor-house 

 limestone quarry, cliesterlite ! in crystals implanted on dolomite, ru- 

 tile ! in brilliant acicular crystals, which are finely terminated, calcite 

 in scalenohedrons, zoisite. clamourite f in radiated groups of crystals 

 on dolomite, quartz 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, zircon in iron ore (about half a mile 

 from the yillage). 



East Fallowfield. — Soapstone. 



East Goshen. — Serpentine, asbestus, magnetite (lodestone), gar- 

 net. 



Elk. — Menaccanite with muscovite, chromite ; at Lewisville, black 

 tour iii< dine. 



West Goshex. — On the Barrens, one mile north of West Chester, 

 amianthus, serpentine, cellular quartz, jasper, "chalcedony, drusy 

 quartz, chlorite, mamiolite, indurated talc, magnesite in radiated crys- 

 tals on serpentine, hematite, asbestus; near R. Taylor's mill, chromite 

 in octahedral crystals, deiceylite, radiated magnesite, aragonite, stauro- 

 lite, garnet, asbestus, epidote ; zoisite on hornblende at West Chester 

 water- works mot accessible at present). 



Xew Garden". — At Niyin's limestone quarry, brown tourmaline, ne- 

 cronite, scapolite, apatite, brown and green mica, rutile, aragonite, 

 fibrolitc, kaolinite, tremolite. 



Kennett. — Actinolite, brown tourmaline, brown mica, epidote, tre- 

 molite, scapolite, aragonite ; on Wm. Cloud's farm, snnstone! / cha- 

 bazite. sphene. At Pearce's old mill, zoisite, epidote, sundone ; sun- 

 stone occurs in good specimens at yarious places in the range of horn- 

 blende rocks running through this township from X. E. to S. 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 

 Hack tourmaline, tremolite, rutile, green mica, apatite; at Pusey's 

 quarry, rutile. tremolite. 



East Marlborough.— On the farm of Bailey & Brother, one mile 



