142 
LONG 
GALLERY. 
Nat. Hist. 
in Upper Austria; the stalactical rock salt from 
Mexico, &c.— Chloride of ammonium or sal ammoniac , 
from Vesuvius, Saint Etienne en Forez, &c.— Chlorides 
of lead: to these belong, the cotunnlte from Vesuvius ; 
the basic muriate of lead from Mendip ; and the murio - 
carbonate of lead from Derbyshire, of which most rare 
substance a considerable suite is deposited in this 
glass case. Chloride of copper or atacamite , in crystal¬ 
lized splendid groups chiefly from Remolinos Soli- 
dad and Veta negra della pampa larga, in Chili; what 
was originally termed sable vert de Perou, or ataca¬ 
mite (being obtained from the desert of Atacama be¬ 
tween Chili and Peru) is now known to be artificially 
produced by pounding the crystallized and laminar 
varieties for the purpose of using the sand (arenilla) in¬ 
stead of blotting paper. Chloride (or muriate') of silver, 
called also horn-silver and corneous silver: amorphous, 
botryoidal, in laminae, and crystallized in minute cubes 
and octahedrons, from Veta Negra in Chili, the Saxon 
Erzgebirge, &c. Chloride or muriate of mercury, with na¬ 
tive quicksilver from Moschel Landsberg, Almaden, &c. 
Cases 61 and 62 contain a small collection of orga- 
nico-chemical, or such mineralized substances as are 
composed after the manner of organic bodies, from 
which they derive their origin. They are divided into 
salts, resins, bitumen, and coal. To the salts belong: 
the mellate of alumina, also called mellite or honey- 
stone, found in the beds of brown coal at Artern in 
Thuringia ; and the oxalate of iron, formerly known 
by the name of resinous iron, but to which that of 
humboldtite is now generally applied.—To the resins 
may be referred—the amber, of the varieties of which 
a considerable suite is deposited in Case 61, many of 
them enclosing insects, &c.; to which, for the sake of 
comparison, are added, specimens of recent copal, like¬ 
wise containing insects ; fossil copal or Higligate 
resin ; retinite or retin-asplialt , found at Bovey; 
together with some other undetermined resinous sub¬ 
stances. To the bitumina belong the mineral pitch of 
various 
