CHAPTER IV

Behavior of Some of the Principal Ores before the Blowpipe 43

Ores of Antimony 46

Ores of Arsenic 47

Ores of Bismuth 48

Ores of Chromium 49

Ores of Cobalt 50

Ores of Copper 52

Ores of Iron 57

Ores of Lead 60

Ores of Manganese 63

Ores of Mercury 64

Ores of Nickel 65

Ores of Silver 66

Ores of Tin 69

Ores of Zinc 70

COMPARATIVE TABLES

I. Colors of Coatings on Charcoal 73

II. Flame Colorations 73

III. Colors of Borax Beads in oxidizing Flame 74

IV. Colors of Borax Beads in reducing Flame 75

V. Colors of Microcosmic Salt Beads in oxidizing Flame 76

VI. Colors of Microcosmic Salt Beads in reducing Flame 77

BLOWPIPE ANALYSIS