CLASSIFICATION  OF  THE  PUBLICATIONS  OF  THE  UNITED  STATES  GEOLOGICAL 
SURVEY. 
[Bulletin  No.  315. j 
The  publications  of  the  United  States  Geological  Survey  consist  of  (1)  Annual  Reports, 
(2)  Monographs,  (3)  Professional  Papers,  (4)  Bulletins,  (5)  Mineral  Resources,  (6)  Water- 
Supply  and  Irrigation  Papers,  (7)  Topographic  Atlas  of  United  States — folios  and  separate 
sheets  thereof,  (8)  Geologic  Atlas  of  United  States — folios  thereof.  The  classes  num- 
bered 2,  7,  and  8  are  sold  at  cost  of  publication;  the  others  are  distributed  free.  A  circular 
giving  complete  lists  can  be  had  on  application. 
Most  of  the  above  publications  can  be  obtained  or  consulted  in  the  following  ways: 
1.  A  limited  number  are  delivered  to  the  Director  of  the  Survey,  from  whom  they  can  be 
obtained,  free  of  charge  (except  classes  2,  7,  and  8),  on  application. 
2.  A  certain  number  are  delivered  to  Senators  and  Representatives  in  Congress  for 
distribution. 
3.  Other  copies  are  deposited  with  the  Superintendent  of  Documents,  Washington,  D.  C, 
from  whom  they  can  be  had  at  prices  slightly  above  cost. 
4.  Copies  of  all  Government  publications  are  furnished  to  the  principal  public  libraries 
in  the  large  cities  throughout  the  United  States,  where  they  can  be  consulted  by  those 
interested. 
The  Professional  Papers,  Bulletins,  and  Water-Supply  Papers  treat  of  a  variety  of  subjects, 
and  the  total  number  issued  is  large.  They  have  therefore  been  classified  into  the  following 
series:  A,  Economic  geology;  B,  Descriptive  geology;  C,  Systematic  geology  and  paleon- 
tology; D,  Petrography  and  mineralogy;  E,  Chemistry  and  physics;  F,  Geography;  G,  Mis- 
cellaneous; H,  Forestry;  I,  Irrigation;  J,  Water  storage;  K,  Pumping  water;  L,  Quality  of 
water;  M,  General  hydrographic  investigations;  N,  Water  power;  O,  Underground  waters; 
P,  Hydrographic  progress  reports.  This  paper  is  the  ninety-fifth  in  Series  A,  the  com- 
plete list  of  which  follows  (PP= Professional' Paper;  B=Bulletin;  WS=Water-Supply 
Paper) : 
SERIES  A,  ECONOMIC  GEOLOGY. 
B  21.  Lignites  of  Great  Sioux  Reservation:   Report  on  region  between  Grand  and  Moreau  rivers, 
Dakota,  by  Bailey  Willis.    1885.    16  pp.,  5  pis.     (Out  of  stock.) 
B  46.  Nature  and  origin  of  deposits  of  phosphate  of  lime,  by  R.  A.  F.  Penrose,  jr.,  with  introduction  by 
N.S.Shaler.    1888.    143  pp.     (Out  of  stock.) 
B  65.  Stratigraphy  of  the  bituminous  coal  field  of  Pennsylvania,  Ohio,  and  West  Virginia,  by  I.  C. 
White.    1891.    212  pp.,  11  pis.     (Out  of  stock.) 
Bill.  Geology  of  Big  Stone  Gap  coal  field  of  Virginia  and  Kentucky,  by  M.  R.  Campbell.    1893.  106  pp., 
6  pis.     (Out  of  stock.) 
B  132.  The  disseminated  lead  ores  of  southeastern  Missouri,  by  Arthur  Winslow.    1896.    31  pp.     (Out 
of  stock.) 
B  138.  Artesian-well  prospects  in  Atlantic  Coastal  Plain  region,  by  N.H.Darton.     1896.    228  pp.,  19  pis. 
B  139.  Geology  of  Castle  Mountain  mining  district,  Montana,  by  W.  H.  Weed  and  L.  V.  Pirsson.    1896. 
164  pp.,  17  pis. 
B  143.  Bibliography  of  clays  and  the  ceramic  arts,  by  J.  C.  Branner.     1896.     114  pp. 
B  164.  Reconnaissance  on  the  Rio  Grande  coal  fields  of  Texas,  by  T.  W.  Vaughan,  including  a  report 
on  igneous  rocks  from  the  San  Carlos  coal  field,  by  E.  C.  E.  Lord.    1900.    100  pp.,  11  pis.     (Out 
of  stock.) 
B  178.  El  Paso  tin  deposits,  by  W.  H.  Weed.    1901.    15  pp.,  1  pi. 
B  180.  Occurrence  and  distribution  of  corundum  in  United  States,  by  J.  H.  Pratt.    1901.    98  pp.,  14  pis. 
(Out  of  stock;  see  No.  269.) 
B  182.  A  report  on  the  economic  geology  of  the  Silverton  quadrangle,. Colorado,  by  F.  L.  Ransome. 
1901.    266  pp.,  16  pis.     (Out  of  stock.) 
I 
