﻿820 
  NEW 
  YOEK 
  STATE 
  MUSEUM 
  

  

  An 
  analysis 
  made 
  by 
  tlie 
  writer 
  gave: 
  

  

  Silica 
  65.39 
  

  

  Alumina 
  ., 
  , 
  29.90 
  

  

  Ferric 
  oxid 
  1.10 
  

  

  Lime 
  tr. 
  

  

  Magnesia 
  .65 
  

  

  Alkalis 
  2.50 
  

  

  Water 
  9.75 
  

  

  Total 
  99 
  . 
  29 
  

  

  Northport. 
  The 
  IsTortliport 
  clay 
  and 
  fire 
  sand 
  co. 
  has 
  an 
  exten- 
  

   sive 
  series 
  of 
  pits 
  on 
  Littleneck 
  near 
  !Rorthport. 
  Both 
  fire 
  sand 
  and 
  

   clay 
  are 
  obtained. 
  The 
  clay 
  bank 
  has 
  a 
  hight 
  of 
  about 
  40 
  feet, 
  the 
  

   clay 
  is 
  of 
  a 
  bluish 
  black 
  and 
  yellowish 
  white 
  color. 
  The 
  darker 
  

   clay 
  is 
  the 
  lower, 
  and 
  contains 
  much 
  carbonaceous 
  matter. 
  The 
  

   deposit 
  is 
  stratified, 
  the 
  layers 
  of 
  clay 
  being 
  separated 
  by 
  thin 
  sheets 
  

   of 
  a 
  rather 
  coarse 
  sand. 
  It 
  is 
  shipped 
  chiefly 
  to 
  New 
  England. 
  

  

  At 
  the 
  eastern 
  side 
  of 
  the 
  bank 
  a 
  bed 
  of 
  white 
  clay 
  underlies 
  

   the 
  fire 
  sand, 
  but 
  little 
  of 
  this 
  has 
  been 
  mined. 
  

  

  The 
  following 
  are 
  analyses 
  of 
  ISTew 
  York 
  stoneware 
  clays 
  and 
  

   kaolin. 
  

  

  

  Elm 
  point 
  

  

  Glencove 
  

  

  Li'tleneck 
  

  

  Kreischervil 
  e 
  

  

  KaoUn 
  

  

  Kreischer- 
  

  

  ville 
  

  

  Silica 
  

  

  62.06 
  

  

  Y0.45 
  

  

  62.66 
  

  

  64.26 
  

  

  82.51' 
  

  

  Alumina 
  . 
  . 
  . 
  

  

  18.09 
  

  

  21.74 
  

  

  18.09 
  

  

  24.76 
  

  

  11.57 
  

  

  Oxid 
  of 
  iron. 
  

  

  5.40 
  

  

  1.72 
  

  

  0.97 
  

  

  0.83 
  

  

  0.63 
  

  

  Lime 
  ...... 
  

  

  1.05 
  

  

  0.24 
  

  

  0.79 
  

  

  0.73 
  

  

  0.29 
  

  

  Magnesia 
  . 
  . 
  . 
  

  

  tr. 
  

  

  0.30 
  

  

  

  . 
  tr. 
  

  

  0.78 
  

  

  Alkalis 
  .... 
  

  

  6.11 
  

  

  5.00 
  

  

  2.23 
  

  

  2.35 
  

  

  2.66 
  

  

  

  92. 
  Yl 
  

  

  99.45 
  

  

  84.74 
  

  

  92.93 
  

  

  98.44 
  

  

  