107 
sulphuret of antimony of the former;—the miargyrite 
of H. Rose, first separated by Mohs from red silver 
under the name of hemiprismatic ruby-blende;—the 
sulpho-salt commonly called brittle silver (the rbschge- 
wachs of the Hungarian miners) # appears to be com¬ 
posed of the same constituent elements as the dark and 
the bright red ruby-silver ores, but in different propor¬ 
tions;— bournonite , a sulpho-salt known also by the 
names of endellione, and triple sulphuret of lead, anti¬ 
mony, and copper;—and in the next case, 
Case 12, The grey copper or fahl-ore (a double 
sulpho-salt, on the chemical constitution of which some 
light has lately been thrown by the researches of H. 
Rose), crystallized, massive, and disseminated in various 
substances. 
The remainder of the substances in this glass-case 
cannot be specified till some necessary additions have 
been made to its contents. 
In the six following cases the oxides of the electro¬ 
positive metals are deposited. 
Case 13 contains the oxides and hydrous oxide of 
manganese , for the present only arranged according to 
their old division into foliated, compact, and earthy grey 
manganese; a remarkable variety of the latter is the 
wady which has the property of inflaming spontaneously 
when mixed with linseed oil.—Oxide of manganese, 
zinc and iron ( franhlinite ) &c. 
Case 14. This and the two following cases contain 
the oxides and hydrous oxides of iron:—specular iron 
or iron glance , among the specimens of which may be 
specified those from Elba, remarkable on account of 
their beautiful iridescence and play of colours; the 
variety in large laminar crystals appearing like polished 
steel, from Stromboli and Vesuvius;—the micaceous 
iron ore of Werner, belonging partly to this species, 
partly to the scaly brown iron stone; —red iron ore , 
divided into compact red iron stone and red hematite. 
LONG 
GALLERY. 
Nat. Hist. 
* It is placed in the next glass case, No. 12. 
Case 
