583 
Minerals  described — Continued . 
Orthoclase,  Crook,  1. 
Orthoclase,  Eyerman,  1. 
Orthoclase,  Siruonds,  3. 
Orthoclase,  Tassin,  1. 
Orthoclase,  Van  Iliso.  12. 
Orthoclase,  Whitlock,  1. 
Osteolite.  Whitlock,  1. 
Ottrelite,  Van  Hise,  12. 
Pachnolite,  Boggild,  o. 
Painterite,  Pratt  and  Lewis,  1. 
Palacheite,  Eakle,  3,  4. 
Palladium,  Headden,  4. 
Paragonite,  Boggild,  •""». 
Paragonite,  Pratt  and  Lewis.  1. 
Paragonite,  Van  Hise,  12. 
Parankerite,  Van  Hise.  12. 
Paranthite,  Pratt  and  Lewis.  1. 
Parisite,  Flink,  2. 
Pattersonite.  Pratl  and  Lewis.  1. 
Pearceite,  Penfield,  4. 
Pearl,  Farrington,  12. 
Pectolite,  Boggild,  5. 
Pectolite,  Clarke  and  Steiger,  1. 
Pectolite,  Eakle.  1. 
Pectolite,  Moses,  1. 
Pectolite,  Steiger,  2. 
Pectolite,  Van  Hise,  12. 
Pectolite,  Whitlock,  1. 
Pegmatite,  Tassin.  1. 
Penninite,  Pratt  and  Lewis,  1. 
Penninite,  Simonds,  ::. 
Penninite.  Van  Hise,  12. 
Pentlandite,  Barlow,  8. 
Perovskite,  Boggild.  ."i. 
Perovskite,  Van  Hise.  12. 
Petroleum,  Crook,  1. 
Petroleum,  Glenn,  7. 
Petroleum,  Simonds,  3. 
Petroleum,  Whitlock,  1. 
Phenacite,  Farrington,  12. 
Phenacite,  Tassin,  1. 
Phenacite,  Whitlock,  1. 
Phillipsite,  Boggild,  5. 
Phillipsite,  Van  Hise,  12. 
Phlogopite,  Boggild,  5. 
Phlogopite,  Clarke  and  Steiger,  1. 
Phlogopite.  Crook,  1. 
Phlogopite.  McNairn,  1. 
Phlogopite.  Osann,  2. 
Phlogopite,  Simonds,  3. 
Phlogopite,  Van  Hise,  12. 
Phlogopite,  Whitlock,  1. 
Phosgenite,  Warren,  1. 
Phosphate,  Glenn,  7. 
Phosphorite,  Whitlock,   1. 
Pickeringite,  Boggild,  5. 
Picotite,  Pratt  and  Lewis.  1. 
Picrolite,  Pratt  and  Lewis,  1. 
Piedmontite,  Van  Hise,  12. 
Pigeonite,  Winchell   (A.  N.),  3. 
Pirssonite.  Pratt,  3. 
Pisanite.  Schaller,  1,  3,  8. 
Pitch  hlende.  Simonds,  3. 
Plagioclase,  Crook,  1. 
Platinum.  Dickson,  3. 
Platinum,  Kemp,  11. 
Minerals  described — Continued . 
Platinum,  Simonds,  3. 
Platinum,  Whitlock,  1. 
Plumbojarosite,    Hillehrand    and    Pen- 
field,  1. 
Polianite,  Merrill   (G.  I'.).  11'. 
Pollucite,  Clarke  and  Steiger,  1. 
Pollucite,  Wells,  2. 
Polybasite,  Ransome,  16. 
Polycrase,  Farrington,  12. 
Polydymite,  Barlow,  8. 
Prehnite,  Boggild,  5. 
Prehnite,  Clarke  and  Steiger,  1. 
Prehnite,  Eyerman,  1. 
Prehnite,   Farrington,   12. 
Prehnite.  Perry  and  Emerson,  1. 
Prehnite.  Schaller,  8. 
Prehnite,  Tassin,  1. 
Prehnite,  Van  Hise,  12. 
Prehnite,  Whitlock,  1. 
Prehnite,  Wright   (F.  E. ) ,  6. 
Prihramite,  Simonds,  3. 
Prochlorite,  Eyerman.   1. 
Prochlorite.  Perry  and  Emerson,  1. 
Prochlorite,  Pratt  and  Lewis,  1. 
Prochlorite,  Van  Hise,  12. 
Prochlorite,  Whitlock,  1. 
Proustite,  Ransome,  16. 
Proustite,  Whitlock,  1. 
Pseudomalachite,  Simonds,  3. 
Psilomelane,  Merrill  (G.  I'.),  12. 
Psilomelane,  Simonds,  3. 
Psilomelane,  Whitlock,  1. 
Pureauiite,  Brush  and  Dana,  5. 
Purpurite,  Graton  and  Schaller,  1. 
Pyrargyrite,  Whitlock,  1. 
Pyrite,  Bain,  2.' 
Pyrite,  Barbour   (E.  H.),  8. 
Pyrite,  Barlow,  8. 
Pyrite,  Boggild,  5. 
Pyrite,  Buckley,  3. 
Pyrite,  Crook,  1. 
Pyrite,  Farrington,  12. 
Pyrite,  Glenn,  7. 
Pyrite,  Grant   (U.  S.).  5. 
Pyrite,  Ihlseng,  1. 
Pyrite,  Julien,  5. 
Pyrite,  Kemp,  10. 
Pyrite,  Kunz,  4. 
Pyrite,  Liudgren,  29. 
Pyrite,  Nicol,  1. 
Pyrite,  Palache,  4. 
Pyrite,  Pratt  and  Lewis,  1. 
Pyrite,  Ransome,  3,  11.  16. 
Pyrite,  Rogers,  2,  4. 
Pyrite.  Schaller,  1,  8. 
Pyrite.  Simonds,  3. 
Pyrite,  Smith  (W.  S.  T.),  3. 
Pyrite,  Smyth   (C.  H.  > .  6. 
Pyrite,  Spurr,  3. 
Pyrite,  Stokes,  1. 
Pyrite,  Tassin,  1. 
Pyrite,  Van  Hise,  12. 
Pyrite,  Weed.  5. 
Pyrite.  Whitlock,  1,  4. 
Pyrite,  Wright  (F.  E.),  6. 
Pyrites,  Merrill   (G.  P.),  12. 
