TABLE OF CONTENTS. 



LIST OF PLATES AND FIGURES. 



PAGE 



-Cavities in Artificial Ruby (two cuts) 5 



Liquid-Cavities in Natural Ruby and Sapphire 5 



Acicular Crystals in Sapphire 7 



Cuneiform Crystals in Ruby and Sapphire 7 



National Filter facing 55 



National Filter . facing 56 



Earring of Meteoric Iron 72 



Carroll County Meteorite 73 



Sections of Carroll County Meteorite (3 cuts) 74 



Section of Iron from the Turner Mounds 74 



Catorze Meteorite 75 



Widmanstatten Figures in Catorze Meteorite 76 



Driven Wells facing 82 



Hollow Quartz Crystals 123 



