Malachite 



Chessylite ..... 



Satin-spar (Caloite, Aragonite, and Gypsum) 



Fluor-spar .... 



Apatite 



Iron-pyrites 



XI 

 PAGE 



533 

 534 



534 

 535 

 55G 



THIRD PART 



DETERMINATION AND DISTINGUISHING OF PRECIOUS STONES 



APPENDIX 



Pearls 



Nature and Formation 

 Application 

 Pearl-fishing 

 Imitation . 



585 

 592 

 594 

 600 



Coral ... . • 



The Coral Skeleton . 

 The Living Coral 

 Distribution : Coral-banks 

 Coral-Fishing : Application : Trade 



601 

 601 

 605 

 608 

 611 



