234 Geological and Mineralogical Notices. 
such decisive evidences in the boulders of New England and the wes- 
tern states. In Brown’s tract, (a wilderness region lying northeast, 
richly stocked with game and filled with delightful lakes,) am inform- 
ed by those who frequent it for hunting, that the eminences are com- 
posed of rugged, primitive rocks covered with a hardy growth of ever- 
greens. It is probable, from the investigations on the northwest and 
east near Lake Champlain, where the primitive rocks are found, that 
it is but a short distance from Boonville to the junction of the trans- 
ition limestone with the earlier formations. In fact, all that part of 
the state north of the Mohawk and Black rivers is described in Ma- 
clure’s sketch and map as primitive, although further examinations 
may modify this view; and if I mistake not, the bed of the Black river 
near Boonville is partly in granite, and the High falls are made by 2 
granite ledge, or dyke—although as my recollection of these observa- 
tions is indistinct, I would not assert them with entire confidence. 
New Locality of Cale Spar.—Information from a young farmer 
that “they found diamonds in his neighborhood,” induced me to visit 
the spot he pointed out, expecting as usual to find fine crystals of 
quartz. It was on the western bank of the Dry Sugar river, and on 
away a large quantity of earth and stones, several tortuous 
vertical cracks were discovered, six or eight feet long, in some parts 
of sufficient width to insert the hand, and filled with wet argillaceous 
earth, containing great numbers of loose imperfect crystals of cale 
spar. The face of the rock on each side of the vein was entirely 
covered with an incrustation of beautiful crystals. Their form is 
represented by figures 96 and 97, of Shepard’s Mineralogy—the 
equiaxe of Haiiy, with the lateral angles replaced by tangent planes 
variously produced—also figure 19, Pl. 3, in Cleaveland’s Mineral- 
ogy. Some of the crystals are an inch in length—* six sided prisms 
with pentagonal sides, terminated at each extremity by three penta- 
gonal faces, which stand on alternate lateral planes, and form with 
them an-angle of 116° 34’.” The rock is very hard and divided 
into layers of from two to twelve inches, and it requires much labor 
and care to extract the specimens without injury. 
Green Coccolite.—Large. boulders of green coccolite and glassy 
quartz, in about equal proportions, are found interspersed with those 
of g ‘anite in Boonville and Leyden, and when laid up in the farm 
the fresh fracture exposed to view, the pieces have a most 
yearance. I have found pebbles of this kind in the Mo- 
Rome, and at the foot of High falls on Black river—thirty 
Gee miles spr 
