﻿GENERAL 
  INDEX 
  

  

  r 
  prefixed 
  to 
  the 
  page 
  numbers 
  refers 
  to 
  the 
  Director's 
  report; 
  other 
  

   page 
  numbers 
  refer 
  to 
  the 
  appendixes. 
  The 
  superior 
  figures 
  tell 
  the 
  

   exact 
  place 
  on 
  the 
  page 
  in 
  ninths; 
  e. 
  g. 
  23' 
  means 
  page 
  23, 
  beginning 
  in 
  

   the 
  third 
  ninth 
  of 
  the 
  page, 
  i. 
  e. 
  about 
  one 
  third 
  of 
  the 
  way 
  down. 
  

   For 
  index 
  to 
  entomologists 
  report, 
  tee 
  p. 
  377. 
  

  

  Acadian 
  ' 
  group, 
  143S 
  144^ 
  

  

  Acer 
  Negundo, 
  296" 
  

  

  Acer 
  nigrum, 
  278^ 
  

  

  Actinolite, 
  12r. 
  

  

  Adirondaclis, 
  plutonic 
  rocks, 
  124\ 
  

  

  139'; 
  Archaean 
  rocks, 
  140*-41'; 
  

  

  limestone, 
  142«; 
  sandstone, 
  142«, 
  

  

  144^; 
  iron 
  oces, 
  218». 
  

   Adzes, 
  collections, 
  20' 
  ; 
  description, 
  

  

  23'-24\ 
  

   Aeons, 
  see 
  Geologic 
  time. 
  

   Agnotozoic 
  series, 
  135^ 
  141*. 
  

   Agrimonia 
  mollis, 
  2T9^ 
  

   Air, 
  119'; 
  geologic 
  changes 
  produced 
  

  

  by, 
  128*, 
  179^ 
  239^ 
  

   Albany, 
  tube 
  found 
  near, 
  55\ 
  

   Albany 
  county, 
  Hudson 
  river 
  group, 
  

  

  149^ 
  lower 
  Helderberg 
  group, 
  157^ 
  

   Albite, 
  12r. 
  

   Allegany 
  county, 
  tubes 
  found 
  in, 
  

  

  Amanitopsis 
  strangulata,300"-2='; 
  ex- 
  

   planation 
  of 
  plate, 
  314'. 
  

  

  Amboy, 
  stone 
  balls 
  found 
  near, 
  25^ 
  

  

  Amelanchier 
  rotundifolia, 
  279'. 
  

  

  American 
  talc, 
  co,, 
  r 
  121^ 
  

  

  Amphiboles, 
  12r. 
  

  

  Amulets, 
  description, 
  56«-61*; 
  de- 
  

   scription 
  of 
  plates, 
  58^-59'; 
  cpUec- 
  

   tions, 
  57'. 
  

  

  Andesite, 
  12P, 
  125'. 
  

  

  Animals, 
  classification, 
  130-31. 
  

   Anorthite, 
  121^ 
  

  

  Anorthosite, 
  141^ 
  

  

  Anthony, 
  Mrs 
  E. 
  C, 
  gift, 
  273». 
  

  

  Anthony's 
  Nose, 
  124'. 
  

  

  Antwerp 
  red 
  hematites, 
  219". 
  

  

  Apatite, 
  localities 
  producing, 
  233*. 
  

  

  Appropriations, 
  reduction 
  in, 
  r5'; 
  

   increase, 
  r7'. 
  

  

  Aragonite, 
  120«. 
  

  

  Archaean 
  series, 
  138'-40«; 
  term 
  de- 
  

   fined, 
  138'; 
  exposures, 
  136''-41*; 
  

   typical 
  localities, 
  140'-4r. 
  

  

  Archaean 
  time, 
  13.5^ 
  

  

  Archaeopteryx, 
  172^ 
  

  

  Argillite, 
  196\ 
  

  

  Arisaema 
  triphyllum 
  pusillum, 
  297»- 
  

   98^ 
  

  

  Aristotle, 
  geologic 
  observations 
  of, 
  

   113^ 
  

  

  Aronia 
  nigra, 
  279'. 
  

  

  Arrow-heads, 
  material, 
  173\ 
  

  

  Arsenic, 
  localities 
  producing, 
  231'. 
  

  

  Asbestus, 
  12r. 
  

  

  Ashburner, 
  C: 
  A., 
  articles 
  on 
  pro- 
  

   duction 
  of 
  oil, 
  228'. 
  

  

  Asphalt. 
  122^ 
  

  

  Aster 
  glomeratus, 
  281'. 
  

  

  Aster 
  Schreberi, 
  281\ 
  

  

  Atkinson, 
  G: 
  F., 
  gift, 
  273^ 
  

  

  Atmosphere, 
  see 
  Air. 
  

  

  