TABLE OF CONTENTS. 





PAGE 





PAGE 



Preface 



V 



Table of Hardness . 



xvii 



List of Works on Mineralogy 



vii 



Toughness, Specific Gravity . 



xviii 



Introduction 



xi 



Taste .... 



ib. 



General Characters of Minerals . 



ib. 



Odour, Adhesion to the tongue. 





Physical Characters of Minerals . 



xii 



Cold. 



xix 



External Form and Structure 



ib. 



Electricity, Magnetism 



ib. 



Systems of Crystallography 



ib. 



Chemical Composition . 



XX 



Twins or Macles 



xiii 



Action of the Blowpipe 



ib. 



Pseudomorphous Crystals . 



ib. 



Action of Acids 



xxiv 



Characters depending on Light 



xiv 



Chemical Formula explained . 



xxvii 



Colour, Transparency, Lustre . 



ib. 



Classification of Minerals 



xxix 



Optical Properties . 



XV 



List of Minerals . 



XXX 



Eefraction, Double Refraction . 



ib. 



Plan of Principal Floor, Mus. of 





Polarization, Dichroism, Pleo- 





Practical Geology 



xlii 



chroism ... 



xvi 



Contents of Horse-shoe Case . 



xliii 



Physical Properties . 



ib. 



List of Symbols and Signs 



xliv 



Phosphorescence, Fluorescence . 



ib. 



Technical terms used by Jewellers 





Streak, Stain 



ib. 



and Lapidaries 



xlvi 



Frangibility or Tenacity 



xvii 



Errata and Addenda 



xlvii 



Fracture, Cleavage 



ib. 



Glossary. 





