* 
C. U. Shepard—Meteorie Stone of Searsmont, Me. 135 
are wholly without luster. 
he thickness of the crust is more than double that found in 
any stone belonging to my collection,—amounting at least to 
one-sixteenth of an inch. ‘The stone is rather below the average 
In respect to frangibility. The coloris bluish-white, and remark- 
ably uniform, except from feeble stains of peroxide of iron, 
and from silvery white, metallic points, produced by the meteoric 
iron. ore than half the stone is in the form of rounde 
grains, mostly with roughened or drusy surfaces, and of a size 
rather loosely coherent, and without visible crystalline structure. 
Indeed, as seen by the microscope, it is often porous, reminding 
one of the siliceous skeletons obtained in fluxing certain sili- 
cates in blowpipe experiments. This white mineral may form 
& quarter or more of the stone. ‘ : 
__, the rounded globules are bluish-gray, rarely with a faint 
tnge of yellow, vitreous in luster and translucent, with two 
imperfect oblique cleavages. On the whole, they resemble the 
unaltered grains of boltonite more than any of our terrestrial 
minerals ; and differ only in their greater tendency to assume 
rend Sp thickly scat- 
ute points of bright meteoric iron are very thickly 
tered Seta the Ban A few grains of troilite, the largest 
of the size of small kernels of Indian corn (maize), likewise 
Present themselves; together with a single blackish mass of 
Similar dimensions, which on being touched with the point of 
Traife was found to be soft, and left a bright metallic streak 
4tis probably a plumbaginous aggregate. Sp. gr. of the agere- 
gte=3e¢ 5 
