﻿CLAYS 
  OF 
  NEW 
  YORK 
  G19 
  

  

  sively 
  worked 
  around 
  Baton 
  Eonge; 
  they 
  make 
  a 
  good 
  quality 
  of 
  

   building 
  brick 
  but 
  at 
  many 
  places 
  they 
  are 
  covered 
  with 
  a 
  great 
  

   thickness 
  of 
  loess. 
  Similai* 
  clays 
  of 
  the 
  same 
  age 
  form 
  a 
  series 
  cf 
  

   bluffs 
  on 
  the 
  western 
  side 
  of 
  the 
  present 
  Mississippi 
  valley 
  from 
  

   the 
  Arkansas 
  state 
  line 
  to 
  the 
  Gulf 
  of 
  Mexico. 
  These 
  clays 
  have 
  

   been 
  worked 
  at 
  Marksville, 
  Washington 
  and 
  ]N^ew 
  Iberia. 
  At 
  the 
  

   latter 
  place 
  a 
  good 
  dry 
  pressed 
  brick 
  is 
  made 
  from 
  them. 
  

  

  A 
  third 
  group 
  of 
  clays, 
  comprises 
  a 
  seriea 
  of 
  pocket-like 
  deposits 
  

   in 
  modern 
  alluvium 
  of 
  the 
  Eed 
  river. 
  They 
  probably 
  represent 
  

   abandoned 
  portions 
  of 
  the 
  river 
  bed. 
  In 
  addition 
  to 
  these 
  three 
  

   main 
  groups 
  of 
  clays, 
  others 
  of 
  Lafayette 
  age 
  occur 
  in 
  northern 
  

   Louisiana. 
  Lignitic 
  shales 
  are 
  also 
  found 
  in 
  certain 
  portions 
  of 
  

   northern 
  Louisiana 
  near 
  Shreveport. 
  These 
  may 
  perhaps 
  be 
  suit- 
  

   able 
  for 
  the 
  manufacture 
  of 
  paving 
  brick. 
  

  

  Maine 
  

  

  The 
  clay 
  industry 
  of 
  Maine 
  is 
  on 
  the 
  decline. 
  There 
  are 
  a 
  num- 
  

   ber 
  of 
  brick 
  yards 
  along 
  the 
  coast, 
  which 
  in 
  former 
  years 
  sent 
  

   their 
  product 
  to 
  Boston, 
  but 
  the 
  establishment 
  of 
  local 
  yards 
  

   around 
  the 
  latter 
  city 
  has 
  had 
  a 
  bad 
  effect 
  on 
  this 
  trade. 
  Two 
  

   stoneware 
  potteries, 
  one 
  at 
  Portland, 
  the 
  other 
  at 
  Bangor, 
  are 
  still 
  

   in 
  operation, 
  but 
  they 
  draw 
  their 
  material 
  largely 
  from 
  other 
  

   states. 
  The 
  clays 
  found 
  in 
  Maine 
  are 
  all 
  of 
  Quaternary 
  age. 
  

  

  Maryland 
  

  

  This 
  state 
  supports 
  an 
  active 
  <jlay-working 
  industry, 
  but 
  little 
  

   is 
  known 
  concerning 
  the 
  raw 
  material. 
  Kaolin 
  and 
  pottery 
  clays 
  

   are 
  said 
  to 
  occur 
  at 
  a 
  number 
  of 
  localities. 
  In 
  the 
  western 
  portion 
  

   of 
  the 
  state, 
  at 
  Mt 
  Savage, 
  occur 
  important 
  deposits 
  of 
  flint 
  and 
  

   plastic 
  fire 
  clays. 
  The 
  Devonian 
  shales 
  are 
  employed 
  for 
  paving 
  

   brick, 
  and 
  in 
  the 
  Potomac 
  formation 
  around 
  Chesapeake 
  bay, 
  

   there 
  are 
  large 
  quantities 
  of 
  clays 
  of 
  different 
  grades. 
  

  

  