warman.]  PTEROPODA PYRITE.  639 
Pumice  stone,  deposits  and  statistics  of MR  1882,  pp  480;  MR  1883-84,  p  721;  MR 
1885,  p433;  Ann  19,  vicont,  pp  529-532;  Ann  20,  vicont,  p615 
Pumpelly  (R.),  report  on  chemical  work  in  1879-80 Ann  1,  pp  47-48 
work  in  charge  of,  during  1879-1881  and  1884-1892. .  ..Ann  1,  pp  57-60;  Ann  2, 
j>l>  35-40;  Ann  6,  p  18;  Ann  7,  pp  60-61;  Ann  8,  i,  pp  124- 
125;  Ann  9,  pp  75-76;  Ann  10,  i,  pp  114-116;  Ann  11,  i,  pp 
64-65;  Ann  12,  i,  pp  67-70;  Ann  13,  i,  pp  100-102,102-103 
Pumpelly  (R.),  Wolff  (J.E.),  and  Dale  (T.N.),  geology  of  Green  Mountains 
in  Massachusetts Mon  xxm 
Pumping  water  for  irrigation Vnn  13,   rn,  pp  332-338;  WS  1;  \VS  10,  pp  34-36 
Pumps  for  irrigation,  types  of WS  1,  pp  17-19,50-51 
Pumps  and  water  lifts  used  in  irrigation,  new  tests  of WS  14 
Pupidae  of  Eocene  of  New  Mexico Bull  34,  p  27 
< >!'  North  America  (nonmarine  fossil)   Vnn  3,  pp  455-457 
of  Pleistocene  of  Great  Basin Bull  1 1 ,  p  22 
Purgatory  conglomerate  of  Narragansett  Basin Mon  xxxiii,  pp  364-374 
Purgatory  River,  How  of,  measurements  of - Ann  11, 
ii,  p98;  Ann  is,  [V,  pp  231  232;  Ann  L9,  iv,  pp  1558-360; 
Ann  20,  iv,  pp  57,  340-342;  Ann  21.  iv.  pp  235  -236;  WS  11, 
p61;   WS   I6,pl23;  WS  2s,  pp  I  13,  1 16,  1 17;  WS  37,p263 
Purification  of  factory  wastes  in  Massachusetts,  experiments  on WS  22,  pp  27-35 
of  sewage  at  manufacturing  establishments WS  22,  pp  22-26 
at  towns  on  Great  Lakes,  necessity  of WS  22,  pp  36-41 
Purington  (C.  W. ),  economic  geology  of  La  Plata  quadrangle,  Colorado GF  60, 
PP  12-14 
economic  geology  of  Telluride  quadrangle,  Colorado GF  57,  pp  15-18 
preliminary  report  on  mining  industries  of  Telluride  quadrangle,  Colorado.  .Ann 
l\  m.  pp  745-850 
Purpuridse  from  clays  and  marls  of  New  .Jersey Mon  xvill, pp  193-194 
Pyramid  Harbor,  Alaska,  reconnaissance  to  Eagle  City  from..  Ann  21,  [i,pp  331-391 
Pyramid  Lake,  analysis  of  water  of Mon  xi,  pp  57-58 
Pyramid  Peak  quadrangle,  ( !alif< >rnia,  geology  of GF  31 
Pyramidellidse  from  clays  and  marls  of  New  Jersey Mon  xviii,  pp  151-152 
from  Colorado  formation Bull  106,  pp  140-143 
from  Cretaceous  of  Pacific  coast Bull  133,  p  70 
Pyrenomyeetea\  from  Lower  Coal  Measures  of  Missouri Mon  xxxvu,  pp  13-14 
Pyrite,  analyses  of MR  1886,  p  652 
analysis  of,  from  Canada,  Capelton MR  1883-84,p  8$1;  MR  1885,  p  507 
from  Colorado,  Leadville  district Mon  xn,  pp  557,  602 
Leadville  district,  alteration  products  of Mon  xn,  p  606 
from  France,  near  Lyon MR  1883-84,  p  885 
from  Georgia " MR  1883-84,  p  880;  MR  1885,  p  506 
from  Germany,  Westphalia MR  1883-84,  p  885 
from  Massachusetts,  Rowe MR  1883-84,  p  878;  MR  1885,  p  503 
from  New  Hampshire,  Milan MR  1883-84,  p  877;  MR  1885,  p  501 
from  New  York,  Rockland  County,  nickeliferous MR  1886,  p  712 
St.  Lawrence  County MR  1885,  p  504 
Ulster  County MR  1885,  p  504 
from  North  Carolina,  Gaston  County MR  1885,  p  505 
from  Portugal,  San  Domingo  mine MR  1885,  p  508 
from  Spain,  Rio  Tinto  mine MR  1883-84,  p  884;  MR  1885,  p  508 
Tharsis  mine MR  1885,  p  508 
from  Tennessee,  Ducktown MR  1885,  p  506 
from  Vermont,  South  Strafford  and  Walcotville MR  1885,  pp  502,  503 
from  Virginia,  Louisa  County MR  1883-84,  p  879;  MR  1885,  p  505 
