300 GEOLOGY AND MINERALOGY. 
north of Monte Verdi; it occurs in regular veins, of considerable size, The 
mineral is found in blocks smooth at the surface and mammillated internally— 
often cavernous. I saw some remarkable masses, several feet long, in which small 
pieces had been cemented together by a fresh development of chalcedony, 
resulting in a compact siliceous conglomerate without any flaw. The pebbles 
were principally buff-coloured or green, the cement colourless. The neighbour- 
hood affords specimens showing every gradation between opaque black flint, 
jasper, agate, chaleedony, and waxy opal.” 
MINERALOGICAL NOTICES. 
American Meteorites:—Professor J. Lawrence Smith has communicated 
analyses of three new meteorites to the March number of the “ American Journal 
of Science and Arts.” 1. Lincoln County Meteorite: Ash-grey, with white, yellow- 
ish, and dark patches, and shining pitch-like crust. Sp. gr. 3:20. Total weight, 
8lbs. 1440z. Seen to fall, August 5th, 1855. Consists chiefly of pyroxene, with 
disseminated olivine and orthoclase, and a half-per-cent of nickcliferous iron. 2, 
Oldham County Meteorite: Sp. gr. 789. Total weight, 112lbs. Date of fall 
unknown. Contains: Iron, 91:21; Nickel, 7°81; Cobalt, 0°25; Copper, a trace ; 
Phosphorus, 0:05. 3. Robertson County Meteorite: Sp. gr.7'85. Total weight, 
3ilbs. Time of fall unknown. Contains. (in addition to nodular granules of iron 
pyrites, sparingly scattered through its mass): Iron, 89°59; Nickel, 9:12; 
Cobalt, 0°35 ; Copper,a trace ; Phosphorus, 0-04. 
Rutile-— Wolfram.—Cerite: Professor H. Sainte-Claire Deville has detected 
small quantities of both vanadie and molybdic acid in the Rutile of Saint-Yrieix 
(Department of the Haute Vienne, France.) Also feeble traces of tantalic acid 
in the Wolfram of Saint-Leonard ; and small amounts of titanie acid and tellurous 
acid (with traces of vanadium) in the Cerite of Bastnaes, Westmannland, Sweden. 
“ Sur la présence de quelques éléments ordinairements trés-rare dans des substances 
plus communes.” Annales de Chimie et de Physique: Mars, 1861. 
Chrome Garnet:—Professor T. Sterry Hunt, of the Geological Survey of 
Canada, has kindly sent us the following notice: “A beautiful, emerald-green, 
transparent garnet is found in Orford, C. E. It occurs massive, granular, and 
erystallized in calcite, and is associated with Millerite, (sulphuret of nickel.) 
The finest crystals, which are not, however, above a line in diameter, occur in 
druses in the massive variety. They are dodecahedrons, sometimes offering 
replacements on their edges. This yarnet resembles the Uwarowite of the Ural 
Mountains, but differs somewhat in composition, being a lime-alumina garnet con- 
taining about six per cent. of oxide of chromium.” 
Calcite and Arragonite :—Professor Gustay Rose has published in Poggen- 
dorff's Annalen a series of interesting experiments on the formation of calcite and 
arragonite, in continuation of his previous researches on that subject. These 
experiments fully confirm the assertions of Bishof, that arragonite is capable of 
forming at a low temperature, especially in dilute solutions ; and they serve thus, 
to exptain the occurrence of that form cf carbonate of lime in the gypsum de- 
posits of certain localities, as well as in the substance of fossil shells, ete. 
