MINERALS, 267 
X. Amphibole separated from amphibole gabbro, Beaver Creek, Big Trees quad- 
rangle, California. Analysis by William Valentine. See Bull. 168, p. 206. 
Y. Amphibole separated from quartz monzonite, Tioga road, southeast of Mount 
Hoffman, Mariposa County, California, Sp. er., 3.203 at 21.5° Analysis by W. F. 
Hillebrand. See Bull. 168, p. 208. 
Z. Amphibole separated from the granite of Butte, Montana. Incomplete analysis 
for lack of material. Analysis by H. N. Stokes. 
BERYL. 
A. White beryl from the tin mine at Winslow, Maine. Opaque, milky, associated 
with mica, fluorite, calcite, tinstone, etc. Sp. gr., 2.707 at 27°. Analysis by W. F. 
Hillebrand. 
B. Green beryl from near Home post-office in eastern Tennessee. Analysis by 
F. W. Clarke. 
NEPHELITE. 
"A. Eleolite from Litchfield, Maine. Dark-gray cleavable masses, of greasy luster. 
Described by F. W. Clarke in Bull. 42. 
B. Another sample from Litchfield. Analysis by George Steiger. 
C. Nephelite extracted by solution from the elzolite syenite of Red Hill, New 
Hampshire. Described by Bayley in Bull. Geol. Soc. America, vol. 3, p. 231. 
Analysis by W. F. Hillebrand. 
