﻿492 
  F. 
  P. 
  Dunnington 
  — 
  Distribution 
  of 
  Titanic 
  Oxide 
  

  

  To 
  present 
  a 
  more 
  satisfactory 
  comparison 
  with 
  the 
  amount 
  

   of 
  titanic 
  oxide 
  in 
  the 
  rocks, 
  the 
  percentage 
  on 
  the 
  ignited 
  

   soil 
  is 
  given 
  together 
  with 
  that 
  on 
  the 
  air-dried 
  soil. 
  

  

  Nos. 
  (1) 
  to 
  (12) 
  are 
  all 
  from 
  Albemarle 
  Co 
  , 
  Ya. 
  (1) 
  is 
  

   dark 
  red 
  clay, 
  from 
  Carter's 
  mountain, 
  farm 
  of 
  Rev. 
  J. 
  T. 
  

   Randolph 
  being 
  the 
  soil 
  from 
  which 
  was 
  formed 
  a 
  f 
  ulgerite 
  (?) 
  

   which 
  first 
  drew 
  my 
  attention 
  to 
  this 
  occurrence 
  of 
  titanic 
  

   oxide. 
  (2), 
  deep 
  red 
  clay, 
  one 
  mile 
  south 
  of 
  (1). 
  (3), 
  red 
  clay, 
  

   one 
  mile 
  north 
  of 
  (1). 
  (4), 
  red 
  clay, 
  one-half 
  mile 
  west 
  of 
  (1). 
  

   (5), 
  light 
  red 
  sand, 
  one 
  mile 
  northwest 
  of 
  (1). 
  (6), 
  red 
  bot- 
  

   tom 
  soil, 
  one 
  and 
  one-harf 
  miles 
  northwest 
  of 
  (1). 
  (7), 
  white 
  

   micaceous 
  soil, 
  near 
  McCormick 
  Observatory, 
  University 
  Ya., 
  

   and 
  three 
  miles 
  west 
  of 
  (1). 
  (8), 
  near 
  chemical 
  laboratory 
  of 
  

   University 
  Ya. 
  (9), 
  mica 
  schist, 
  one-half 
  mile 
  north 
  of 
  (8). 
  

   (10), 
  deep 
  red 
  clay, 
  ten 
  miles 
  southwest 
  of 
  (1). 
  (11), 
  red 
  clay 
  

   ten 
  miles 
  west 
  of 
  (1). 
  (12), 
  Diorite, 
  the 
  rock 
  which 
  is 
  most 
  

   common 
  in 
  the 
  above 
  locality. 
  

  

  Nos. 
  (13) 
  to 
  (17) 
  are 
  from 
  other 
  points 
  in 
  Yirginia 
  : 
  No. 
  (13), 
  

   is 
  deep 
  red 
  clay 
  from 
  farm 
  of 
  Mr. 
  J. 
  Shelton, 
  Lowesville, 
  Nel- 
  

   son 
  Co. 
  No. 
  (14) 
  a 
  dark 
  gray 
  clay 
  from 
  swamp 
  on 
  Rappa- 
  

   hannock 
  River 
  in 
  Stafford 
  Co. 
  No. 
  (15), 
  a 
  gray 
  sandy 
  loam, 
  

   near 
  Williamsburg, 
  James 
  City 
  Co. 
  No. 
  (16), 
  a 
  yellow 
  clay, 
  

   per 
  Mr. 
  F. 
  P. 
  Brent, 
  Onancock 
  Creek, 
  Accomac 
  Co. 
  No. 
  (17), 
  

   white 
  sea 
  sand, 
  from 
  Yirginia 
  Beach, 
  Princess 
  Anne 
  Co. 
  The 
  

   percentage 
  of 
  titanic 
  oxide 
  found 
  in 
  these 
  respectively 
  is 
  as 
  

   follows 
  : 
  

  

  Air-dried. 
  

  

  Air-dried. 
  

  

  Air-dried. 
  

  

  Ignite 
  

  

  (1) 
  5-42 
  

  

  (7) 
  0-77 
  

  

  (13) 
  1-87 
  

  

  

  (2) 
  1-45 
  

  

  (8) 
  2-86 
  

  

  (14) 
  0-88 
  

  

  

  (3) 
  2-73 
  

  

  (9) 
  1*14 
  

  

  (15) 
  0-49 
  

  

  O'oO 
  

  

  (4) 
  2-73 
  

  

  (i0) 
  1-86 
  

  

  (16) 
  0-80 
  

  

  0-84 
  

  

  (5) 
  0-33 
  

  

  (11) 
  1-51 
  

  

  (17) 
  0-07 
  

  

  0-07 
  

  

  (6) 
  1-73 
  

  

  (12) 
  1*15 
  

  

  Average 
  1*57 
  

  

  

  Nos. 
  (18) 
  to 
  (40) 
  are 
  from 
  other 
  portions 
  of 
  the 
  United 
  

   States. 
  No. 
  (18), 
  a 
  light 
  brown 
  loam, 
  per 
  Dr. 
  A. 
  C. 
  Hopkins, 
  

   Charlestown, 
  W. 
  Ya. 
  No. 
  (19), 
  a 
  gray 
  loam, 
  per 
  Mr. 
  J. 
  W. 
  

   Rinehart, 
  Foote, 
  Mineral 
  Co., 
  W. 
  Ya. 
  No. 
  (20), 
  pale 
  red 
  loam, 
  

   a 
  "limestone 
  soil" 
  per 
  Mr. 
  C. 
  C. 
  Councilman, 
  AVorthington's 
  

   valley, 
  Baltimore 
  Co., 
  Md. 
  No. 
  (21), 
  a 
  gray 
  yellow 
  loam, 
  per 
  

   Dr. 
  Simon 
  Gage, 
  Cornell 
  University, 
  N. 
  Y. 
  No. 
  (22), 
  a 
  gritty 
  

   yellow 
  loam, 
  per 
  Dr. 
  F. 
  P. 
  Yenable, 
  Chapel 
  Hill, 
  N. 
  C. 
  No. 
  

   (23), 
  a 
  light 
  yellow 
  clay, 
  1 
  foot 
  deep, 
  per 
  Mr. 
  R. 
  M. 
  Cooper, 
  

   near 
  Black 
  River, 
  Sumter 
  Co., 
  S. 
  C. 
  No. 
  (24) 
  a 
  gray 
  clay 
  per 
  

   Dr. 
  P. 
  S. 
  Baker, 
  over 
  Carboniferous 
  Limestone, 
  Greencastle, 
  

  

  