| PAGE | ||
|---|---|---|
| Preface | v | |
| CHAPTER | ||
| I. | Introduction | 1 |
| II. | The Masking of Similarity of Symmetry and Constancy of Angle by Difference of Habit, and its Influence on Early Studies of Crystals | 10 |
| III. | The prescient Work of the Abbé Haüy | 22 |
| IV. | The Seven Styles of Crystal Architecture | 33 |
| V. | How Crystals are Described. The Simple Law limiting the Number of possible Forms | 50 |
| VI. | The Distribution of Crystal Faces in Zones, and the Mode of Constructing a Plan of the Faces | 60 |
| VII. | The Work of Eilhardt Mitscherlich and his Discovery of Isomorphism | 70 |
| VIII. | Morphotropy as distinct from Isomorphism | 98 |
| IX. | The Crystal Space-Lattice and its Molecular Unit Cell. The 230 Point-Systems of Homogeneous Crystal Structure | 111 |
| X. | Law of Variation of Angles in Isomorphous Series. Relative Dimensions of Unit Cells. Fixity of Atoms in Crystal | 121 |
| XI. | The Explanation of Polymorphism and the Relation between Enantiomorphism and Optical Activity | 133 |
| XII. | Effect of the Symmetry of Crystals on the Passage of Light through them. Quartz, Calcite, and Gypsum as Examples | 162 |
| XIII. | Experiments in Convergent Polarised Light with Quartz, as an Example of Mirror-Image Symmetry and its accompanying Optical Activity | 183 |
| XIV. | Experiments with Quartz and Gypsum in Parallel Polarised Light. General Conclusions from the Experiments with Quartz | 201 |
| XV. | How a Crystal Grows from a Solution | 236 |
| XVI. | Liquid Crystals | 255 |
| XVII. | The Chemical Significance of Crystallography. The Theory of Pope and Barlow—Conclusion | 283 |
| Index | 295 | |