66 NATURAL HISTORY. [nORTH 
lazuli (which furnishes the valuable pigment called ultra-marine); 
— the haiiyne, and a few other of the imperfectly known silicates of 
soda, lime, and alumina combined with sulphates. 
Case o6. Arsenious acid and arseniates : the former (also called 
arsenic-bloom, or octahedral oxide of arsenic) is frequently confounded 
with arseniate of lime, and the white octahedral ciwstals of it, often seen in 
collections on realgar and orpiment, ai-e generally artificially produced in 
the interior of mines. — The arseniates in this glass Case are : — arseniate 
of lime, called pharmacolite, chiefly in white acicular crystals, from Wit- 
tichen in Suabia, and Riegelsdorf in Hessia. — Arsejiiate of iron or phar- 
macosiderite, which occursonly crystallized, chiefly in cubes (whence Wer¬ 
ner’s name of Wiirfel-ertz), from Cornwall, from San-Antonio-Pereira, 
Brazil, on hydrous oxide of iron, &c. ; — skorodite, a substance which 
appears to be closely allied to Bouruon’s martial arseniate of copper. — 
Arseniates of copper, chiefly from Cornwall, consisting of the foliated 
arseniate or copper-mica, the lenticular arseniate or lentil-ore, and the 
olive-ore of Werner, which are formed into five species by Bournon, 
but their exact composition remains still to be ascertained by exact 
chemical analyses. The eucliroite also belongs to these, and the 
hupferschaum of Werner, at least that from Falkenstein in Ttrol: for 
some other varieties bearing that name appeal* to be referable to carbo¬ 
nate of zinc. — Arseniate of cobalt, or red cobalt ore, comprising the 
earthy {cobalt crust') and the radiated (cobalt-bloom) varieties, from 
Salfeld, Allemont, &c. — Arseniate of nickel. 
Case o7. Among the vai-ious phosphates deposited in this Ceise may 
be pai'ticularized — phosphate of iron, Werner’s vivianite, in variously 
grouped crystals (fi*om Bodenmais in Bavaria, from Cornwall, fi*om Fer¬ 
nando Po, ice.), massive and pulverulent: among the specimens of 
the latter are the massive variety of New Jersey, and several earthy 
blue varieties in clay, peat, wood, &c. : the chalcosiderite of Ullmann, 
Werner’s green iron earth, and Thomson’s muUicite, are likewise phos¬ 
phates of iron, — Phosphate of manganese or triplite, from Chanteloube, 
near Limoges, in the department of Haute Vienne in France, where 
several other mineral substances have lately been found, the essential 
component parts of which are iron, manganese, and phosphoric acid. 
— Triphyline, a phosphate of iron, manganese and lithia; — del- 
vauxite, &c. — Phosphate of copper, of which the best characterised 
species are — the octaliedral, or libethenite, from Libethen in Hungary; 
and the prismatic, or rhenite, from Rheinbreitenbach, where it occurs 
with quartz which sometimes passes into calcedony. — Phosphate of 
oxide of uranium: — the yellotv uranite or uran-mica from Autin, 
Limoges, Bodenmais; and the green uranite, or chalcolite, chiefly 
from Coniwall and Saxony; both of them phosphates of oxide of 
m*anium, but distinct by containing, the former a small portion of 
phosphate of lime, and the latter an equivalent portion of phosphate of 
copper. — Phosphate of yttria, or phosphyttrite, a very scarce mineral 
substance, first found in the granite of Lindenas in Norway, and subse¬ 
quently, in equally small quantities, at Ytterby in Sweden. — Phosphates 
of alumina, to which belong — the loavellite, a substance which was ori¬ 
ginally mistaken for a hydrate of pure alumina, and therefore called 
hydrargillite, from Devonshire, Ireland, Brazil, Greenland, from Am- 
berg in Bavaria (called lasionite), from Aussig in Bohemia, on sand- 
