﻿256 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  " 
  No. 
  3," 
  passes 
  through 
  f 
  inch 
  sieve 
  and 
  over 
  -£§- 
  inch. 
  

  

  " 
  No. 
  2," 
  passes 
  through 
  -^ 
  inch 
  sieve 
  and 
  over 
  -^ 
  inch. 
  

  

  u 
  No. 
  1 
  ," 
  passes 
  through 
  T 
  3 
  ^- 
  inch 
  sieve 
  and 
  pver 
  \ 
  inch. 
  

  

  " 
  C," 
  passes 
  through 
  \ 
  inch 
  sieve 
  and 
  over 
  -^ 
  inch. 
  

  

  These 
  grades 
  are 
  used 
  in 
  refrigerators, 
  for 
  curing 
  hides, 
  for 
  

   packing 
  and 
  pickling 
  beef, 
  pork 
  and 
  fish, 
  and 
  for 
  brine 
  making 
  

   generally. 
  

  

  " 
  " 
  or 
  " 
  dust 
  salt 
  " 
  is 
  the 
  fine 
  particles 
  remaining 
  after 
  the 
  

   other 
  grades 
  are 
  separated, 
  and 
  is 
  used 
  in 
  the 
  manufacture 
  of 
  

   carbonate 
  of 
  soda, 
  bleaching 
  powder, 
  soap, 
  etc., 
  and 
  for 
  agricul 
  

   tural 
  purposes. 
  

  

  It 
  had 
  been 
  expected 
  that 
  the 
  sinking 
  of 
  a 
  second 
  shaft 
  a 
  

   short 
  distance 
  from 
  the 
  one 
  described 
  in 
  this 
  report 
  would 
  give 
  

   opportunity 
  for 
  obtaining 
  exact 
  figures 
  for 
  the 
  thickness 
  of 
  the 
  

   strata 
  in 
  the 
  upper 
  part 
  of 
  the 
  section, 
  but 
  the 
  second 
  shaft 
  

   though 
  begun, 
  has 
  not 
  yet 
  been 
  sunk 
  to 
  the 
  rock. 
  

  

  The 
  accompanying 
  diagram 
  of 
  the 
  rock 
  section 
  from 
  the 
  surface 
  

   to 
  380 
  feet 
  below 
  the 
  surface 
  was 
  prepared 
  from 
  data 
  obtained 
  

   by 
  a 
  study 
  of 
  the 
  nearest 
  outcrops 
  of 
  rock, 
  and 
  the 
  large 
  amount 
  

   of 
  material 
  which 
  had 
  been 
  hoisted 
  out 
  previous 
  to 
  the 
  beginning 
  

   of 
  the 
  record. 
  

  

  The 
  debris 
  had 
  been 
  so 
  deposited 
  on 
  being 
  brought 
  to 
  the 
  

   surface 
  that 
  it 
  was 
  not 
  found 
  difficult 
  to 
  determine 
  in 
  a 
  general 
  

   way 
  by 
  examination, 
  and 
  by 
  aid 
  of 
  information 
  derived 
  from 
  the 
  

   superintendent 
  and 
  others, 
  the 
  relative 
  position 
  of 
  the 
  strata 
  

   passed 
  through. 
  

  

  There 
  are 
  no 
  rock 
  exposures 
  in 
  the 
  immediate 
  vicinity 
  of 
  the 
  

   shaft, 
  a 
  small 
  one-half 
  a 
  mile 
  west 
  being 
  the 
  nearest. 
  

  

  About 
  two 
  miles 
  distant, 
  on 
  the 
  west 
  side 
  of 
  Conesus 
  lake, 
  are 
  

   several 
  ravines 
  in 
  which 
  the 
  lower 
  Portage 
  and 
  upper 
  Genesee 
  

   shales 
  are 
  well 
  exposed. 
  The 
  lower 
  Genesee 
  beds, 
  including 
  the 
  

   Styliola 
  layer 
  and 
  the 
  upper 
  Hamilton 
  shales, 
  are 
  exposed 
  along 
  

   the 
  outlet 
  of 
  Hemlock 
  lake 
  and 
  at 
  Kichmond 
  Mills, 
  four 
  to 
  five 
  

   miles 
  east, 
  and 
  at 
  several 
  places 
  in 
  the 
  vicinity 
  of 
  Geneseo 
  on 
  

   the 
  west. 
  

  

  Careful 
  examinations 
  were 
  made 
  of 
  the 
  outcrops 
  mentioned 
  

   and 
  as 
  accurate 
  measurements 
  of 
  the 
  strata 
  obtained 
  as 
  possible. 
  

  

  By 
  a 
  series 
  of 
  levelings 
  from 
  a 
  fiae 
  exposure 
  in 
  the 
  ravine 
  at 
  

   Eagle 
  point, 
  two 
  miles 
  west 
  of 
  the 
  shaft, 
  of 
  the 
  easily 
  recognized 
  

  

  