﻿

  v 
  l'ORK 
  cm 
  

  

  16 
  

  

  17 
  

  

  13 
  James 
  Hall. 
  Btudj 
  of 
  the 
  20th 
  an. 
  j 
  state 
  

  

  lb. 
  oat 
  hist. 
  1868, 
  p. 
  168 
  210) 
  

  

  14 
  ' 
  :ion 
  of 
  ne* 
  s 
  of 
  Orlnoldea 
  and 
  other 
  fossils, 
  etc. 
  

  

  ,;l1 
  :m 
  - 
  "*P*1 
  N, 
  ,1). 
  oat 
  hist. 
  1870, 
  p. 
  L81-200) 
  

  

  15 
  On 
  the 
  rathera 
  eounti< 
  

  

  (Proc. 
  A 
  i. 
  n 
  ;u 
  iv. 
  sri- 
  lb7r)i 
  B 
  p 
  80-84) 
  

  

  B. 
  P. 
  Whitfield, 
  in 
  Lieut 
  G. 
  .M 
  w 
  report 
  upon 
  U. 
  S. 
  geogr. 
  

  

  su 
  a 
  merid. 
  1877. 
  v. 
  l, 
  ral. 
  p. 
  19-20 
  

  

  James 
  Hall. 
  Note 
  apoD 
  the 
  history 
  ami 
  value 
  of 
  the 
  term 
  Hudson 
  

   rn 
  up 
  in 
  American 
  geological 
  nomenclature. 
  (Proc. 
  Amer 
  

  

  " 
  adv. 
  ^77. 
  26:2 
  

  

  18 
  N. 
  S. 
  Shaler. 
  On 
  the 
  existence 
  of 
  the 
  Alleghany 
  division 
  of 
  the 
  Ap- 
  

   palachian 
  range 
  within 
  the 
  Hudson 
  valley. 
  (Amer. 
  naturalist. 
  

   11:027-28) 
  

  

  10 
  C. 
  D. 
  Walcott. 
  The 
  Utica 
  slate 
  and 
  related 
  formations 
  of 
  the 
  same 
  

   geological 
  horizon. 
  (Trans. 
  Albany 
  inst 
  10:1-38) 
  

  

  20 
  T. 
  N. 
  Bale. 
  (),, 
  the 
  age 
  of 
  the 
  clay-slates 
  and 
  grits 
  of 
  Poughkeepsie 
  

  

  (Amer. 
  Jour, 
  eel 
  1879. 
  3d 
  ser. 
  17:57-59) 
  

  

  21 
  J. 
  D. 
  Dana. 
  On 
  the 
  Hudson 
  river 
  age 
  of 
  the 
  Taconic 
  schists 
  and 
  on 
  

  

  the 
  dependent 
  relations 
  of 
  the 
  Dutchess 
  county 
  and 
  western 
  Con- 
  

   nectieut 
  limestone 
  belts. 
  (Amer. 
  jour. 
  sci. 
  1879. 
  17:375) 
  

  

  22 
  W. 
  R. 
  Gerard. 
  The 
  Hudson 
  river 
  group 
  at 
  Poughkeepsie. 
  (Amer 
  

  

  naturalist. 
  1879. 
  13:199) 
  

  

  23 
  W. 
  B. 
  Dwight. 
  On 
  the 
  recent 
  explorations 
  in 
  the 
  Wappinger 
  valley 
  

  

  limestone 
  of 
  Dutchess 
  co. 
  New 
  York. 
  (Amer. 
  jour, 
  sci 
  1879 
  

   17:389-42) 
  

  

  24 
  Calciferous 
  as 
  well 
  as 
  Trenton 
  fossils 
  in 
  the 
  Wappinger 
  lime- 
  

   stone 
  at 
  Rochdale 
  and 
  a 
  Trenton 
  locality 
  at 
  Xewburgh 
  N. 
  Y 
  (\ 
  mer 
  

   jour. 
  sci. 
  1880. 
  19:50-54) 
  

  

  25 
  Arnold 
  Guyot. 
  On 
  the 
  physical 
  structure 
  and 
  hypsometry 
  of 
  the 
  

  

  Gatskll] 
  mountain 
  region. 
  (Amer. 
  jour. 
  sci. 
  1880. 
  19:429^51) 
  

  

  26 
  C. 
  E. 
  Beecher. 
  Lisl 
  of 
  species 
  of 
  fossils 
  from 
  an 
  exposure 
  of 
  the 
  

  

  n 
  "' 
  associated 
  rocks 
  within 
  the 
  limits 
  of 
  the 
  city 
  of 
  

  

  Albany. 
  (80th 
  an. 
  rep't 
  X. 
  Y. 
  state 
  mus. 
  nat. 
  hist. 
  18S3. 
  p. 
  78) 
  

  

  27 
  H. 
  Booth. 
  ery 
  of 
  Utica 
  slate 
  graptolites 
  on 
  the 
  west 
  side 
  of 
  

  

  the 
  Hudson. 
  (Amer. 
  Jour. 
  bcI. 
  insh. 
  20:380-81) 
  

  

  28 
  W. 
  B. 
  Dwight. 
  Recent 
  <\plorations 
  in 
  the 
  Wappinger 
  valley 
  lime- 
  

  

  '"• 
  of 
  Dutchesa 
  CO. 
  X. 
  V. 
  .Amer. 
  jour. 
  sci. 
  1884. 
  27:249-59) 
  

  

  29 
  S. 
  W. 
  Ford. 
  Age 
  of 
  the 
  glared 
  and 
  contorted 
  slaty 
  rocks 
  in 
  the 
  

  

  ihodack 
  Landing, 
  Rensselaer 
  co. 
  N. 
  Y. 
  (Amer 
  jour 
  

   sci. 
  1884. 
  28:2o^<j, 
  

  

  30 
  A 
  "° 
  of 
  tne 
  slaty 
  and 
  arenaceous 
  rocks 
  in 
  the 
  vicinity 
  of 
  

  

  y 
  N. 
  Y. 
  (Amer. 
  jour. 
  sci. 
  1885. 
  -99) 
  

  

  S1 
  Groat 
  f 
  ' 
  nilt 
  - 
  Behodack 
  Landing, 
  X. 
  Y. 
  (Amer. 
  jour 
  sci 
  1885 
  

  

  29:16-20) 
  

  

  82 
  N. 
  H. 
  Darton. 
  Fossils 
  in 
  the 
  Hudson 
  river 
  slates 
  of 
  the 
  southern 
  

   part 
  of 
  Orange 
  co. 
  N. 
  Y. 
  (Amer. 
  jour. 
  sci. 
  1885. 
  30:452-54) 
  

  

  