X Xanthosiderite, [51]
Z Zeolites, [141] Zinc, [63] Zinc blende, [65] Zinc red ore, [66] Zinc, ruby, [65] Zincite, [66] Zircon, [127]
Plate Frontispiece
Tourmaline crystals, growing amid feldspar crystals in a cavity in granite, from Paris, Me.
Plate 5
Gold in quartz, from California
Plate 6
