warman.]  TWENTY-FIRST    ANNUAL    REPORT.  31 
chief  of  division;  Tart  V. — Forest  reserves,  Henry  Gannett,  chief  of 
division;  Part  VI. — Mineral  resources  of  the  United  States,  1899 
Metallic  products,  coal,  and  coke  David  T.  Day,  chief  of  division;  Part 
VI  (Continued). — Mineral  resources  of  the  United  States,  1899  Non- 
metallic  products,  except  coal  and  coke  DavidT.  Day,  chief  of  division; 
Part  VII.—  Texas]  [Vignette]  Washington  Government  Printing 
Office     L900  [Pts.  Ill,  IV,  VI,  VI  Continued,  and  VII,  1901] 
8°.  7  pts.  in  8  vols.,  aii<  1  hi sparate atlas  for  maps  with  Pt.  V.  608  pp.,  3  pis.  (maps); 
522  I*]).,  68  pis.  and  maps;  644  pp.,  68  pis.  and  maps;  768  pp.,  156  pis.  and  maps; 
711  pp.,  14:}  pis.  and  maps  (39  maps  in  atlas);  viii,  656  pp.;  viii,  634  pp.;  666  pp., 
71  pis.  and  maps. 
The  three  maps  with  Part  I  are  entitled:  (I)  Map  showing  condition  and  prog- 
ress of  topographic  surveys  and  location  of  gaging  stations.  (II)  Map  showing 
condition  and  progress  of  astronomic  location,  primary  triangulation,  primary  traverse, 
and  spirit  leveling.  (Ill)  Map  showing  progress  of  topographic  and  geologic  sur- 
veys, 1*79-1900.  (See  notes  to  Fifth  and  Fourteenth  annual  reports,  pp.  12  and  17  of 
this  bulletin.  ) 
Pt.       I.    Director's  report,  including  triangulation,  primary  traverse,  and  spirit 
leveling.     60S  pp.,  :;  pis.  (maps). 
Report  of  the  Director,  pp.  11-204,  pis.  i-iii  (maps  in  pocket). 
Triangulation,  primary  traverse,  and  spirit  leveling,  by  H.  M.  Wilson, 
.1.  II.  Renshawe,  E.  M.  Douglas,  and  R.  U.  Goode,  pp.  205-582. 
Index,  pp.  583-608. 
Pt.      II.  General  geology,  economic  geology,  Alaska.     522  pp.,  68  pis.  and  maps. 
Geology  of  the    Rico   Mountains,  Colorado,  by  Whitman  Cross  and 
Arthur  Coe  Spencer,  pp.  7-165,  pis.  i-xxii. 
Glacial  sculpture  of  the  Bighorn  Mountains,  Wyoming,  by  Francois  E. 
Matthes,  pp.  L67-190,  pi.  xxiii. 
The  Esmeralda  formation,  a  fresh-water  lake  deposit,  by  H.W.Turner; 
with  a  description  of  the  fossil  plants,  by  F.  H.  Knowlton,  and  of  a 
fossil  fish,  by  F.  A.  Lucas,  pp.  191-226,  pis.  xxiv-xxxi. 
Mineral  vein  formation  at    Boulder  Hot  Springs,  Montana,  by  Walter 
Harvey  Weed,  pp.  227-255,  pis.  xxxii-xxxiv. 
Geology  of  the  eastern  Choctaw  coal  field,   Indian  Territory,  by  Joseph 
A.Taff  and  George  I.  Adams,  pp.  257-311,  pis.  xxxv-xxxvii. 
Preliminary  report  on  the  Camden  coal  field  of  southwestern  Arkansas, 
by  Joseph  A.  Taff,  pp.  313-329,  pis.  xxxviii,  xxxix. 
A  reconnaissance  from  Pyramid  1 1  arbor  to  Eagle  City,  Alaska,  including 
a  description  of  the  copper  deposits  of  the  upper  White  and  Tanana 
rivers, by  Alfred  Hulse  Brooks,  pp.  331-391,  pis.  xl-1. 
A  rec<  >nnaissanceof  the  Chitina  River  and  the  Skolai  Mountains,  Alaska, 
by  Oscar  Rohn,  pp.  393-440,  pis.  li-lix. 
Preliminary  report  on  a  reconnaissance  along  Chandlar  and  Koyukuk 
rivers,  Alaska,  in  1899,  by  F.  C.  Schrader,  pp. 441-486, pis. lx-lxviii. 
Alaskan  geographic  names,  by  Marcus  Baker,  pp.  487-509. 
[ndex,  pp.  511-522. 
Pt.    III.  <  reneral  geology,  ore  and  phosphate  deposits,  Philippines.       644  pp.,  68 
pis.  and  maps. 
The  Newark  system  of  the  Pomperaug  Valley,  Connecticut,  by  William 
Herbert  Hobbs;  with  a  report  on  fossil  wood  from  the  Newark  for- 
mation of  South  Britain,  Connecticut,  by  F.  H.  Knowlton,  pp.  7-162, 
pis.  i-xvii. 
The  laccoliths  of  the  Black  Hills,  by  Thomas  Augustus  Jaggar,  jr. ;  with 
a  chapter  on  experiments  illustrating  intrusion  and  erosion,  by  Ernest 
Howe,  pp.  163-303,  pis.  xviii-xlvii. 
