warman.]  YAKUTAT ZINC.  857 
Yorktown  epoch Bull  84,  p  338 
Yosemite   National  Park,  report  on,  by  Director  Walcott,  concerning  roads, 
administration,  etc Ann  19,  i,  pp  59-60 
Yosemite  quadrangle,  California,  forest  conditions  in Ann  21,  v,  pp  571-574 
Yosemite  Valley,  origin  of Ann  8,  i,  pp  350-351 
Youghiogheny  River,  Maryland,  flow  of,  measurements  of Vim  21,  i\.  pp  L55^156; 
\VS  i>7.  pp  59,  61,  65;  WS  36,  pp  L59-160 
Yttrialite,  chemical  constitution  of Bull  125,  pj >  78-105 
Yuba  River,  California,  profile  of WS  44,  p  93 
Yukon  Basin,  Alaska,  topography  and  drainage  of Ann  21.  n.  pp  4ti2-4t>4,  465 
Yukon  gold  district,  Alaska,  coal  in,  localities  of Ann  1  7,  i,  pp  815-819 
general  information  concerning Alaska  (2),  pp  85-100 
geology  of Vnn  L8,  m.  [>}»  87—392 
history  and  condition  of,  to  1897 Ann  is,  in.  pp  103-133 
Yukon  Plateau,  Alaska,  notes  on \im  20,  vn,  pp  447-448; 
Ann  21,  n,  pp  346-347.  354,  462-464,  465 
Yukon  silts  of  Alaska,  distribution,  correlation,  etc.,  of V nn  is,  m.  pp  200-221 
Yukon  Valley,  Alaska,  notes  on Vnn  17.  i.  pp  si!0-863 
Yukon-Kuskokwim  water  route,  notes  on Vnn  20,  vn,  pp  97-99 
Yule  limestone  of  Colorado GF  9,  p  6;  GF  48,  p  1 
Zamiese  of  Mesozoic,  older,  of  Virginia Mon  vi,  pp  63-84 
of  Potomac,  or  younger  Mesozoic Mon  \\ .  pp  L66-193 
Zeolites,  analyses  of,  from  Colorado,  Table  Mountain  Bull  20.  p  18 
analysis  of,  from  Maine,  Litchfield Bull  42,  p  34 
from  Montana,  Boulder  Hot  Springs Vnn  21.  ti,  p  243 
chemical  constitution  of Bull  L25,  pp  33-45 
composition  of Bull  L50,  p  H 
derivation  of,  from  feldspar Bull  28,  p  52 
from  Colorado,  basalt  of  Table  .Mountain Bull  20,  pp  L5-38 
Zeolitie  gems,  occurrence  and  statistics  of MR  1892,  pp  779-780 
Zeolitic  minerals  of  Colorado,  Table  Mountain Mon  xxvn,  pp  292-308 
Zeuglodon  beds  of  Alabama,  correlation  of Vn n  is.  1 1 ,  p  342 
Zickenite  from  Colorado,  San  Juan  County Bull  20,  pp  93-95 
Zinc  in  Missouri,  investigation  of Ann  11, 
[,pp  54,  80-81;  Ann  12,  i.  pp  56,  90;   Ann  13.  i,  pp  L3,  87, 123 
in  Montana,  Butte  district GF  38,  p  5 
in  Porto  Rico Ann  20,  vi  cont,  p  777 
in  Tennessee,  Bristol  quadrangle GF  59,  p  8 
Morristown  quadrangle GF  27,  p  5 
in  Virginia,  Bristol  quadrangle <  <  F  59,  p  8 
mining  and  metallurgy  of,  in  United  States MR  18S2,  pp  358-386 
principal  foreign  producers  of  ...MR  1882,  pp  356-358;  MR  1883-84,  pp  4so-4<)l; 
MR  1885,  pp  276-283;  MR  1886,  p  159;  MR  1888,  pp  95-96 
statistics  of ME  L882,  pp  346-386; 
MR  1883-84,  pp  474-491;  MR  1885,  pp  272-283;  MR  1886, 
pp  154-159;  MR  1887,  pp  113-117;  MR  1888,  pp  92-96; 
MR  1889-90,  pp  88-93;  MR  1891,  pp  111-116;  MR  1892,  pp 
130-137;  MR  1893,  pp  102-110;  Ann  16,  in,  pp  378-388; 
Ann  17,  in,  pp  163-177;  Ann  18,  v,  pp  263-280;  Ann  19,  vi, 
pp  223-239;  Ann  20,  vi,  pp  249-266;  Ann  21,  vi,  pp  249-266 
Zinc-bearing  spring  waters  from  Missouri Bull  113,  pp  49-53 
Zinc  clinkers,  manganiferous,  analyses  of,  from  New  Jersey Ann  16, 
in, p  419;  MR  1892,  p  185 
Zinc  minerals  in  Colorado,  Cripple  Creek  district Ann  16,  n,  p  125 
Zinc  ore,  analysis  of,  from  Colorado,  Cripple  Creek  district Ann  16,  n,  p  125 
analysis  of,  from  New  Jersey MR  1885,  p  337 
Bull.  177—01 55 
