CHAPTER XXXI.

THE NEW METALS.

Zinc—The Ores, but not the Metal, known to the Ancients—

Rapid increase of its Production—Chief Zinc-producing

Countries—Platinum—Antimony—Bismuth—Cobalt and Nickel—

Wolfram—Arsenic—Chrome—Manganese—Cadmium—Titanium—

Molybdenum—Aluminium—Aluminium Bronze—Magnesium—Sodium—

Palladium—Rhodium—Thallium 380

The Subterranean World · 第 31 / 48 章