28 



SILICA GEO TIP— Continued: 



J ASP ER — (h . Chrysoprase). — continued. 



527 Massive, light-green. 



Zroc, Silesia. 



528 Do. Light-green, cut and polished. 



Loc, Silesia. 



529 Do. (i. Catscye.) — Fibrous, greenish. 



Loc, Bavaria. 



1215 Do. fj. Jade.) — Pale-green, polished. 



1216 Do. {k. Basa?iite or Lydian Stone.) — Black mass. 



Loc, Kimaon, Himalayas. 



1217 Do. Black mass. 



Loc, Kimnon, Himalayas. 



1 2 18 Do. (/. Saussurite.) — Greyish green mass. 



Loc, Thibet (?) 



550 Chalcedony. — Very large brown specimen. 



^ri Do. Greyish, stalactitic, part of a nodule. 



Loc, Faroe Isles. 



552 Do. Beautiful white specimen. 



553 Do. Mammilate, and branching, stalactites hollow. 



Loc, Trevascus. 



554 Do. White and stalactitic. 



Loc., Trevascus. 



555 Mammillary, yellowish-Avhite. 



Loc, Trevascus. 



556 Do. Very delicate stalactites. 



Loc, North Pool. 



Obs., Presented by Mr. W. M. Tweedy. 



557 Do. Part of a pebble. 



Loc, Hastings. 



558 Do. Pale-brown stalactites. 



Loc, Trevascus. 



559 Do. Large dark colored specimen, with oxide of Iron. 



560 Do. Brown stalactitic mass. 



Loc, Trevascus. 



561 Do. Light brown mass. 



Loc, Trevascus. 



