60 
natural history. (Minerals.) 
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Oxides of antimony:— antimony-ochre on native and grey antimony; 
-—several varieties of the scarce white antimony, from Przibram in Bo¬ 
hemia, on galena, quartz, &c. ;—red antimony , also called antimony - 
blende and kermes , (a combination of oxide and sulphuret of this 
metal,) mostly in fine capillary crystals, from Braunsdorf in Saxony, 
Malazka in Hungary; a so-called argentiferous variety from the Hartz, 
in fibrous flakes resembling tinder ( zunderertz, tinder ore), is a mixture 
of this with other sulphurets. 
T ungstates :—tungstate of lime (scheeiin calcaire of Haiiy), also called 
sclieelite and tungsten (heavy stone), among the more interesting speci¬ 
mens of which are the primitive acute octahedron from Ailemont in 
Dauphiny, and the group of very large crystals from Schlackenwald in 
Bohemia ;—tungstate of iron and manganese or wolfram , massive and 
crystallized, from Schlackenwald and other localities; also as octahedral 
supposititious crystals, derived from tungstate of lime ;—tungstate of lead , 
or scheel-lead (stolzite of Haidinger), from Zinnwald in Bohemia, often 
confounded with the molybdate of this metal. 
Vanadic acid and vanadates: —( Vanadium was discovered in some ores 
of iron from Taberg in Smaland, by Sefstrom : by Del Rio the acid of 
his metal, which he called erythronium, had been found combined with 
oxide of lead, in the browm lead ore of Zimapan in Mexico). Vana¬ 
date of lead ( johnstonite ) from Wanlockhead, and from Beresof, Si¬ 
beria;—the volborthite of Hess, a vanadate of copper. 
Case 39. Molybdic acid and molybdates ;—molybdenum ochre or 
molybdic acid, as a yellow pow 7 der on the sulphuret of this metal, from 
Sweden, &c .;—molybdate of lead , yellow lead ore or carinthite (also 
called wulfenite), massive, lamelliform, and crystallized in splendid 
groups on compact limestone, &c.; chiefly from Bleiberg in Carinthia. 
Oxide of chromium and chromates:— chrome-ochre , from several 
localities;—a suite of specimens of chromate of lead , red lead ore, or 
crocoisite , from the gold mines of Beresof in Siberia, where it chiefly 
occurs in a kind of micaceous rock, mixed with particles of quartz and 
brown iron-stone, and from Brazil ;—chromate of lead and copper, 
called vauquelinite, a concomitant of the Siberian red lead ore ;— 
chrome-iron or chromite, from the department of Var in France, and 
from Baltimore in Maryland, intermixed with talc stained purple by 
chromic acid. 
Boracic acid, or sassoline (chiefly from Vulcano, one of the Lipari 
isles), and borates :—borate of soda, the salt known by the names of 
borax and tinkal, from Tibet, Monte-rotondo, Tuscany, &c.;— hayesine, 
also called boronatrocalcite , a newly-discovered substance, occurring, 
accompanied by glauberite and other Salts, in the province of Tarapaca, 
Peru ;—borate of magnesia or boracite in separate crystals, and the 
same embedded in gypsum ;— datholiie, being a borate with a tri-silicate 
of lime, from Arendalin Norway; the variety from Sonthofen (supposed 
to be a distinct species, called humboldtite by Levy); and the globular- 
fibrous variety (which has received the name of botryolite ), likewise 
from Aren da i. 
Case 40 is set apart for such silicates as contain one or more borates, 
of which, however, in some cases, it is uncertain how far these may be 
considered as essential component parts.—To this order belong the 
species tourmaline and axinite . Among the red-coloured varieties 
of the former, some of which are called rubellite, the most remark- 
