warman]  IRRIGATION ITALY.  415 
Irrigation,  works  for,  classes  of Ann  13,  in,  pp  162-163 
works  for,  in  America  and  India,  comparison  of Ann  13,  in,  pp  116-118 
(See,  also,  Hydrography.) 
Irrigation  Survey,  annual  report  of  Director for  1888-89,  Ann  10,  n;  for  1889-90, 
Ann  11,  n;  for  1890-91,  Ann  12,  n;  for  1891-92,  Ann  13,  in 
law  establishing,  in  1888 Ann  10,  n,  p  38 
plans,  methods,  underlying  principles,  and  operations  of Ann  10,  n,  pp  33-48; 
Ann  11,  ii,  pp  278-287;  Ann  12,  n;  Ann  13,  in 
Irvine  formation  of  Kentucky GF  46,  p  3 
Irving  (R.  D. ),  Archean  formations  of  Northwestern  States Ann  5,  pp  175-242 
classification  of  early  Cambrian  and  pre-Cambrian Ann  7,  pp  365-454 
copper-bearing  rocks  of  Lake  Superior Ann  3,  pp  89-188;  Mon  v 
death  and  biographic  sketch  of Ann  9,  pp  38-42,  79 
introduction  to  Williams's  "Greenstone-schist  areas  of  the  Menominee  and 
Marquette  regions  of  Michigan  " Bull  62,  pp  11-30 
work  in  charge  of,  1882-1887 Ann  4,  pp  28-34;  Ann  5,  pp  24-28; 
Ann  6,  pp  40-48;  Ann  7,pp  68-76;  Ann  8,  i,  pp  132-141 
Irving  (R.  D. )  and  Chamberlin   (T.  C. ),  observations  on  junction  between 
Eastern  sandstone  and   Keweenaw  series  on  Keweenaw 
Point,  Lake  Superi<  >r Bull  23 
Irving  (R.  D. )  and  Van  Hise  (C.  R.),  secondary  enlargements  of  mineral  frag- 
ments in  certain  rocks Bull  8 
Penokee  iron-bearing  series  <  >f  Michigan  and  Wisc<  >nsin Ann  10, 
i,  pp  341-507;  Mon  xix 
Ishpeming  formation,  relations,  petrographic  character,  etc.,  of Ann  15, 
pp  590-598;  Mon  xxvin,  pp  409-444 
Isocardiidye  from  the  marl  beds  of  New  Jersey Mon  ix,  p  200 
Isogeotherms,  investigation  of  subject  of Ann  14,  i,  pp  159-160 
Isometrics  of  liquids Bull  96,  pp  32-62 
Isopyre,  occurrence  of MR  1882,  p  493 
Isostasy;  movements  in  shore-land  districts Vim  13,  n,  pp  110-114 
remarks  on  doctrine  of Ann  18,  n,  p  82 
theory  and  examples  of ■ Ann  12,  i,  p  377;  Ann  14,  i,  p  229; 
Mon  i,  pp  357,  371;  Mon  xn,  p  289;  Ann  7,  pp  616-634 
(See,  also,  Diastrophism.) 
Isostatic  adjustment  and  contraction  of  earth's  crust Ann  13,  n,  pp  280-281 
Italy,  antimony  production  of,  statistics  of MR  1883-84,  p  646 
asphaltum  production  of,  statistics  of Ann  19,  vi  cont,  pp  200-201; 
Ann  20,  vi  cont,  pp  266-268;  Ann  21,  vi  cont,  p  330 
building  stones  from,  at  World's  Columbian  Exposition MR  1893,  pp  575-576 
clay  products  of,  at  Paris  Exposition  of  1900 Ann  21,  vi  cont,  pp  386-388 
coal  production  of,  statistics  of MR  1882,  p  5; 
MR  1883-84,  p  13;  MR  1885,  p  11;  MR  1886,  p  235;  MR  1887, 
p  189;  MR  1888,  p  208;  MR  1891,  p  73;  MR  1892,  p  270; 
MR  1893,  p  202;  Ann  16,  in,  p  248;  iv,  p  21;  Ann  17,  in,  pp 
314,  321;  Ann  18,  v,  pp  128-129, 136, 414,  421;  Ann  19,  vi,  pp 
311,  320;  Ann"20,  vi,  pp  332,  341;  Ann  21,  vi,  pp  113,  363,  373 
copper  production  of,  statistics  of MR  1883-84,  p  356; 
MR  1885,  p  228;  MR  1886,  p  128;  MR  1887,  p  87;  MR 
1888,  p  73;  MR  1889-90,  p  73;  MR  1891,  pp  100, 102;  MR 
1892,  p  114;  MR  1893,  p  86;  Ann  16,  in,  p  352;  Ann  17, 
in,  pp  117,  118;  Ann  18,  v,  pp  219,  220;  Ann  19,  vi,  pp 
176, 177;  Ann  20,  vi,  pp  202,  203;  Ann  21,  vi,  pp  204,  205 
fossil  plants  of,  literature  of Ann  8,  n,  pp  707-716 
