﻿INDEX 
  TO 
  CLAYS 
  OF 
  N'EW 
  YOEK 
  

  

  939 
  

  

  Plasticity, 
  of 
  clays. 
  49u^ 
  504S 
  528^ 
  

   530". 
  53^l-44^ 
  637^ 
  845=^; 
  of 
  paving 
  

   brick, 
  744*; 
  of 
  glass-pot 
  clays, 
  786*; 
  

   of 
  stoneware 
  clajs, 
  791^-92^; 
  of 
  

   shales, 
  825^. 
  

  

  Platting, 
  674'. 
  

  

  Plattsburg, 
  clay 
  deposits. 
  595', 
  709'- 
  

   10*: 
  brick 
  yards, 
  709^-10*; 
  illus. 
  fac- 
  

   ing 
  p. 
  661, 
  674. 
  

  

  Plows, 
  use 
  of, 
  631". 
  

  

  Plunger 
  machine, 
  663^: 
  illus. 
  facing 
  

   p. 
  664-65. 
  

  

  Pocantico 
  river, 
  delta 
  deposits, 
  588*. 
  

  

  Polishing 
  and 
  abrasive 
  materials, 
  852"- 
  

   53\ 
  

  

  Pompeian 
  brick, 
  646*. 
  

  

  Porcelain, 
  794^-98*; 
  analysis, 
  794% 
  796^; 
  

   and 
  white 
  earthenware, 
  comparative 
  

   composition, 
  796^; 
  decoration, 
  814^- 
  

   17*; 
  illus. 
  facing 
  p. 
  805, 
  808; 
  glaz- 
  

   ing. 
  809'-ll^; 
  manufacture, 
  514"; 
  il- 
  

   lus. 
  facing 
  p. 
  791-92, 
  794-99, 
  802, 
  

   804; 
  manufacturers, 
  823®; 
  value 
  of 
  

   output, 
  494*'; 
  vitrification, 
  796^. 
  

  

  Porcelain 
  clays, 
  568-; 
  rational 
  analy- 
  

   sis, 
  538^. 
  

  

  Porosity, 
  of 
  clay, 
  522^, 
  672'; 
  of 
  clay 
  

   wares, 
  854^-55^. 
  

  

  Port 
  Ewen, 
  clay 
  deposits, 
  577*, 
  579^ 
  

   699^; 
  terraces, 
  590^; 
  brick 
  yards, 
  

   699\ 
  

  

  Port 
  Kent, 
  terraces, 
  594". 
  

  

  Port 
  Washington, 
  sands 
  and 
  gravels, 
  

   607'; 
  illus. 
  facing 
  p. 
  596. 
  

  

  Portage 
  shale, 
  769^ 
  826'; 
  physical 
  

   tests, 
  831-; 
  distribution, 
  834^-36^; 
  

   analysis, 
  835^ 
  

  

  Porter, 
  I. 
  P., 
  brick 
  yard, 
  Athens, 
  704*. 
  

  

  Porter, 
  J., 
  brick 
  yard, 
  Glasco, 
  701*. 
  

  

  Portland 
  cement, 
  845®-47"; 
  clays 
  and 
  

   shales 
  used 
  in 
  manufacture 
  of, 
  689", 
  

   847. 
  

  

  Post, 
  W. 
  & 
  J., 
  brick 
  vards, 
  733^-34=. 
  

  

  Potash, 
  511-, 
  512*, 
  512% 
  512", 
  513*, 
  515-. 
  

  

  Potsdam, 
  brick 
  yards, 
  711^; 
  clay 
  de- 
  

   posits, 
  71P. 
  

  

  Potters' 
  clay, 
  in 
  Kentucky, 
  618^; 
  in 
  

   New 
  Jersey, 
  623"; 
  in 
  South 
  Dakota, 
  

   626*. 
  

  

  Pottery, 
  791^-824'; 
  decoration, 
  814^- 
  

   17*: 
  ditferent 
  grades, 
  79P-98*; 
  

   glazes, 
  689", 
  810^-11^; 
  manufacture, 
  

   620% 
  798"-814^ 
  illus. 
  facing 
  p. 
  791- 
  

   808; 
  manufacturers, 
  823^-24'; 
  value 
  

   of 
  output, 
  493", 
  494% 
  

  

  Pottery 
  clays, 
  799^-806' 
  : 
  alkalis 
  in, 
  

   515'; 
  analysis, 
  878"-8P; 
  lime 
  in, 
  

   523'; 
  magnesia 
  in, 
  524*; 
  silica 
  in, 
  

   525*: 
  tensile 
  strength, 
  545'; 
  

  

  in 
  Colorado, 
  613®; 
  Kentucky, 
  617*; 
  

  

  Maryland, 
  619*: 
  Mississippi, 
  620"; 
  

   North 
  Carolina, 
  624'. 
  

  

  Poutre, 
  M., 
  brick 
  yard, 
  707^ 
  

  

  Preparation 
  of 
  clay, 
  655'-60'; 
  machines 
  

   used, 
  054"; 
  pottery 
  clavs, 
  799% 
  799'- 
  

   803% 
  

  

  Prepleistocene 
  clays, 
  606^ 
  

  

  Pressed 
  brick, 
  645"-46-; 
  burning, 
  666*; 
  

   repressed, 
  668*; 
  illus. 
  facing 
  p. 
  463- 
  

   64, 
  668; 
  sorting, 
  679*^; 
  

  

  manufacture: 
  clays 
  used, 
  521', 
  639*; 
  

   use 
  of 
  shale, 
  827*; 
  

  

  in 
  Colorado, 
  613'; 
  Indiana, 
  616*; 
  

   Louisiana, 
  619- 
  ; 
  value 
  of 
  output 
  in 
  

   Xew 
  York, 
  493% 
  494^ 
  New 
  York 
  

   manufacturers, 
  650% 
  913—25% 
  

  

  Preston 
  brick 
  co., 
  756*; 
  illus. 
  facing 
  p. 
  

   756. 
  

  

  Preston 
  Bros., 
  brick 
  yard, 
  715^. 
  

  

  Printed 
  ware, 
  815*-16% 
  

  

  Prospecting 
  for 
  clav, 
  629^-30-. 
  

  

  Puddle. 
  853*. 
  

  

  Pug 
  mills, 
  660% 
  804^; 
  illus. 
  facing 
  p. 
  

   660, 
  663, 
  761, 
  782. 
  

  

  Purification 
  of 
  clay, 
  633"-35^ 
  

  

  Putnam 
  county, 
  brick 
  yards, 
  695". 
  

  

  Pyramids, 
  see 
  Sesrer 
  cones. 
  

  

  Pyrite. 
  508% 
  516% 
  604% 
  646% 
  680'; 
  sep- 
  

   aration 
  from 
  clav, 
  634'. 
  

  

  Pyrometer. 
  553% 
  56V-6P. 
  

  

  Pyrophyllite, 
  505*. 
  

  

  Pyroxene, 
  source 
  of 
  alkaline 
  com- 
  

   pounds, 
  51 
  4\ 
  

  

  Quartz, 
  506% 
  525% 
  526% 
  565% 
  578S 
  596*, 
  

   652% 
  705% 
  793*, 
  84P-442; 
  aid 
  to 
  fu- 
  

   sion, 
  563®; 
  mineralogic 
  characters, 
  

   84P^2%; 
  preparation, 
  843^ 
  illus. 
  

   facing 
  p. 
  793; 
  price, 
  843"-44='; 
  prop- 
  

   erties, 
  534*: 
  uses, 
  547^ 
  548% 
  843«. 
  

   See 
  also 
  Silica. 
  

  

  Quartzite, 
  584*. 
  

  

  Quassaic 
  creek, 
  delta 
  deposits, 
  581% 
  

   588% 
  

  

  Quaternaiy 
  clay 
  deposits, 
  572% 
  573^ 
  

  

  Queens 
  county, 
  brick 
  yards, 
  733''-34'. 
  

  

  Railroads, 
  use 
  of 
  clay 
  in 
  construc- 
  

   tion, 
  853^. 
  

  

  Randolph, 
  clav 
  deposits, 
  576^; 
  brick 
  

   yard, 
  725": 
  shale, 
  848% 
  

  

  Rathenow, 
  analysis 
  of 
  clay 
  from, 
  570"'. 
  

  

  Rational 
  analvs'is, 
  533^-38^ 
  

  

  Rattlers, 
  746*,' 
  752% 
  

  

  Rattling 
  tests 
  on 
  paving 
  brick, 
  751^ 
  

  

  Ravena, 
  quaternary 
  plain, 
  illus. 
  facing 
  

   p. 
  591. 
  

  

  Ravenswood, 
  New 
  Y^'ork 
  architectural 
  

   terra 
  cotta 
  co., 
  763", 
  764^. 
  

  

  Raymond 
  ville. 
  brick 
  yard, 
  712^; 
  clay 
  

   deposits, 
  712% 
  

  

  