Читать книгу Diamonds - William Crookes - Страница 2

LIST OF PLATES

CHAPTER I PRELIMINARY

Cape Colony

River Washings

KIMBERLEY AND ITS DIAMOND MINES

The Pipes or Craters

The Kimberley Mine in Old Days

KIMBERLEY MINES AT THE PRESENT DAY

The Compound System

Underground Workings

The Depositing Floors

Washing and Concentrating Machinery

CHAPTER IV COLLECTING THE GEMS

Automatic Diamond Collector

The Yield of Diamonds

Varieties of Diamonds Fancy Stones

Falling off of Yield with Depth

Stones other than Diamonds

CHAPTER V THE DIAMOND OFFICE

BOART, CARBONADO, AND GRAPHITE

Graphite

Crystallisation

PHYSICAL AND CHEMICAL PROPERTIES OF THE DIAMOND

Hardness

Density or Specific Gravity

Phosphorescence of Diamond

Conversion of Diamond into Graphite

Tribo-Luminescence

Absorption Spectrum of Diamond

Refractivity

The Diamond and Polarised Light

The Diamond and Röntgen Rays

Action of Radium on Diamond

Boiling- and Melting-point of Carbon

CHAPTER IX GENESIS OF THE DIAMOND

A New Formation of Diamond

THE NATURAL FORMATION OF THE DIAMOND

CHAPTER XI METEORIC DIAMONDS

INDEX