﻿772 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  J. 
  C. 
  Smock. 
  — 
  A 
  geological 
  Reconnaissance 
  in 
  the 
  Crystalline 
  Rock 
  

   Region, 
  Dutchess, 
  Putnam 
  and 
  Westchester 
  counties, 
  New 
  York. 
  

   (39th 
  Ann. 
  Rept. 
  N. 
  Y. 
  State 
  Mus. 
  Nat. 
  Hist., 
  pp. 
  166-185, 
  map.) 
  

  

  T. 
  Thorell. 
  — 
  Od 
  Proscorpius 
  Osbornii, 
  Whitfield. 
  

   (Amer. 
  Naturalist, 
  vol. 
  20, 
  pp. 
  267-2*74.) 
  

  

  C. 
  D. 
  Walcott. 
  — 
  Classification 
  of 
  theJ'Catnbrian 
  System 
  of 
  North 
  

   America. 
  

  

  (Amer. 
  Jour. 
  Science, 
  vol. 
  32, 
  pp. 
  138-157.) 
  

  

  C. 
  D. 
  Walcott. 
  — 
  Second 
  Contribution 
  to 
  the 
  Studies 
  on 
  the 
  Cam- 
  

   brian 
  Faunas 
  of 
  North 
  America. 
  

  

  (Bull. 
  U. 
  S. 
  Geolog. 
  Surv. 
  no. 
  30, 
  pp. 
  1-369, 
  pis. 
  i-xxxiii.) 
  

  

  R. 
  P. 
  Whitfield. 
  — 
  Notice 
  of 
  a 
  new 
  fossil 
  body, 
  probably 
  a 
  Sponge 
  

   related 
  to 
  Dictyophyton. 
  

  

  (Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  vol. 
  1, 
  pp. 
  346-348, 
  pi. 
  xxxv.) 
  

  

  R. 
  P. 
  Whitfield. 
  — 
  Notice 
  of 
  Geological 
  Investigations 
  along 
  the 
  

   eastern 
  shore 
  of 
  Lake 
  Champlain, 
  conducted 
  by 
  Prof. 
  H. 
  M. 
  Seely 
  and 
  

   Pres. 
  Ezra 
  Brainerd, 
  of 
  Middlebury 
  College, 
  with 
  descriptions 
  of 
  the 
  

   new 
  Fossils 
  discovered. 
  

  

  (Bull. 
  Amer. 
  Mus. 
  Nat. 
  Hist., 
  vol. 
  1, 
  pp. 
  243-348, 
  pis. 
  xxiv-xxxiv.) 
  

  

  R. 
  P. 
  Whitfield. 
  — 
  Notice 
  of 
  Geological 
  Investigations 
  along 
  the 
  

   eastern 
  shore 
  of 
  Lake 
  Champlain 
  made 
  by 
  Prof. 
  H. 
  M. 
  Seely 
  and 
  

   Pres. 
  Ezra 
  Brainerd. 
  

  

  (Amer. 
  Naturalist, 
  vol. 
  20, 
  pp. 
  1041-1043.) 
  

  

  R. 
  P. 
  Whitfield. 
  — 
  Professor 
  Thorell 
  and 
  the 
  American 
  Silurian 
  

   Scorpion. 
  

  

  (Science, 
  March 
  5.) 
  

  

  G. 
  H. 
  Williams. 
  — 
  The 
  Peridotites 
  of 
  the 
  " 
  Cortlandt 
  Series 
  " 
  on 
  

   the 
  Hudson 
  river 
  near 
  Peekskill, 
  N. 
  Y. 
  

   (Amer. 
  Jour. 
  Science, 
  vol. 
  31, 
  pp. 
  26-41.) 
  

  

  H. 
  S. 
  Williams. 
  — 
  Devonian 
  Lamellibranchiata 
  and 
  species 
  making. 
  

   (Amer. 
  Jour. 
  Science, 
  vol. 
  32, 
  pp. 
  192-199.) 
  

  

  H. 
  S. 
  Williams. 
  — 
  On 
  the 
  classification 
  of 
  the 
  Upper 
  Devonian. 
  

   (Proc. 
  Amer. 
  Assoc. 
  Adv. 
  Sci., 
  vol. 
  34, 
  pp. 
  222-234.) 
  

  

  H. 
  U. 
  Williams.— 
  Notes 
  on 
  the 
  Fossil 
  Fishes 
  of 
  the 
  Genesee 
  and 
  

   Portage 
  Black 
  Shales. 
  

  

  (Bull. 
  Buffalo 
  Soc. 
  Nat. 
  Sci., 
  vol. 
  5, 
  no. 
  1, 
  pp. 
  81-84.) 
  

  

  S. 
  G. 
  Williams. 
  — 
  The 
  westward 
  extension 
  of 
  Rocks 
  of 
  Lower 
  

   Helderberg 
  Age 
  in 
  New 
  York. 
  

  

  (Amer. 
  Jour. 
  Science, 
  vol. 
  31, 
  pp. 
  139-145.) 
  

  

  