SURVEY  PUBLICATIONS  ON   PHOSPHATES  AND  OTHER 
MINERAL   FERTILIZERS. 
The  following  papers  relative  i<>  phosphates,  gypsum  (land  plaster),  and  other  mineral 
materials  used  as  f'ert  ilizers  have  been  published  by  the  United  States  Geological  Survey  or 
by  members  of  its  staff.  Further  references  will  be  found  under  the  head  of  "Gypsum'i 
in  the  list  on  page       of  this  volume: 
\.dams,  G.  [.,  and  others.    Gypsum  deposits  in  the  United  States.     Bulletin  No.  223.    127pp.     1904. 
Daeton,  X.  II .     Notes  on  the  geology  of  the  Florida  phosphates.     In  Am.  Jour.  Sci.,  3d  ser.,  vol.  41, 
pp  L02  105.     1891. 
Eckel,  E.  I  .  Recently  discovered  extension  of  Tennessee  white-phosphate  field,  in  Mineral 
Resources  U.  S.  for  L900,  pp.  812  813.     1901. 
Utilization  of  iron  and  steel  slags.     In  Bulletin  No.  213,  pp.  221  231.     1903. 
The  white  phosphates  of  Decatur  County,  Tenn.     In  Bulletin  No.  213,  pp.  424  425.     1903. 
Eldeidge,  G.  II.     A  preliminarj  sketch  of  the  phosphates  of  Florida.    In  Trans.  Am.  Inst .  Min.  Eng., 
vol.  21,  pp.  191 
Eayes,  C.  W.    TheTi  unessee  phosphates.     In  Sixteenth  Ann.  Rept.,  pt.  4,  pp.  610  630.     1895. 
The  Tennessee  phosphates.     In  Seventeenth  Ann.  Rept.,  pt.  2,  pp.  1  38.     1896. 
The  white  phosphates  of  Tennessee.     In  Trans.  Am.  [nst.  Min.  Eng.,  vol.  25,  pp.  19  28.     1896. 
A  brief  reconnaissance  of  the  Tennessei    pho  phate  field.     In  Twentieth  Ann.  Rept.,  pt.  6, 
1899. 
gi  ological  relations  of  the  Tennessee  brown  phosphates.     In  Science,  vol.  12,  p.  1005.     1900. 
Tennessee  white  phosphate,     [n  Twenty-firsl    ^.nn.  Rept.,  pt.  3,  pp.  473  185.    1901. 
—  Origin  and  extenl  of  the  Tennessee  white  phosphates.     In  Bulletin  No.  213,  pp.  418  123.     1903. 
[hlseng,  M.  C.    a  phosphate  prospecl   in  Pennsylvania.     In  Seventeenth  Ann.  Rept.,  pt.  3,  pp. 
955  957.     1896. 
Mi  mm  iv.  i.k.  i  G.  i  ommercial  development  of  the  Tennessee  phosphates.  In  Sixteenth  \nn .  Repl .. 
pt.  1.  pp.  631  635.     1895. 
Moses,  O.  A.    The  phosphati    deposits  of  South  Carolina.     In  Mineral   Resources  U.  S.  for  1882, 
pp.  504-521.     1883. 
Oeton,  E.    Gypsum  or  land  plaster  in  Ohio.    InMineral  Resources  U.  S.  for  1887,  pp.  596  601.     1888. 
Peneose,  R.   \.  F.     Nature  and  origin  of  deposits  of  phosphate  of  lime.     Bulletin  No.  46.    143  pp. 
1888. 
Stubbs,  W.  ('.     Phosphates  of  Alabama.     In  Mineral  Resources  U.  S.  for  1883  84,  pp.  794  803.     1885. 
Wilbeb,  F.  A.    Greensand  marls  in  the  United  States.     In  Mineral  Resources  U.  S. for  1882,  pp.  522- 
526.     1883. 
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