310 Messrs. Jackson and Alger on the 
into fragments and disposed of, with the exception of a few of the 
smallest, which we had the good fortune to obtain. Some of 
these are nearly colorless and transparent, some are of a straw- 
yellow color, while others are of a smoky shade, passing into 
clove-brown. We were also fortunate enough to obtain from this 
place a perfect crystal, singular for its size and beauty, though 
smaller than the one just mentioned. Its weight is ninety pounds ; 
it measures nineteen inches from the point of its pyramidal termi- 
nation to its base, which is twelve inches in diameter, and has ad- 
hering to it grains of quartz and felspar, which indicate its for- 
mer connexion with the granite, in a cavity of which it was prob- 
ably formed. Its six lateral planes are nine inches in length to its 
acuminating planes, one of which, being unduly extended, nearly 
obliterates the two adjoining ones, and is twelve inches in length. 
This crystal presents, within, the richest shades of color, from 
light topaz and straw-yellow, through clove-brown, into a dark and 
almost opake smoky color. It is covered externally by a thin 
incrustation of common quartz, which, on being cleaved off, lays 
open numerous dark and brilliant prisms of schorl, some of which 
do not exceed in diameter the thickness of a hair, and are nearly 
transparent, while others are the sixteenth of an inch in thickness 
and three inches long. ‘These slender prisms lie upon the sur- 
face of the crystal, or penetrate deeply into its substance, and 
render it an object of still greater interest. This remarkable 
crystal, though ordinarily opake, yet, under the influence of strong 
transmitted light, has its whole interior lit up into a beautifully 
transparent mass, reflecting the colors we have mentioned, and is 
altogether the noblest production which the country has afforded 
us ; it is equalled only by the rarest of the rock-crystals found in 
the Alps and in Siberia. 
