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  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  The 
  most 
  northerly 
  salt 
  well 
  in 
  the 
  Genesee 
  district 
  is 
  the 
  

   well 
  at 
  Teazle 
  hollow, 
  in 
  Caledonia, 
  which 
  begins 
  in 
  the 
  black 
  

   Marcellus 
  shales, 
  just 
  below 
  the 
  horizon 
  of 
  the 
  Stafford 
  

   limestone. 
  

  

  The 
  first 
  rock 
  reached 
  in 
  the 
  York 
  Salt 
  Company's 
  well 
  at 
  

   York, 
  after 
  passing 
  through 
  fifty 
  -two 
  feet 
  of 
  alluvium, 
  is 
  the 
  soft 
  

   Ludlowville 
  shale, 
  about 
  sixty 
  feet 
  above 
  the 
  bottom 
  of 
  the 
  

   Hamilton. 
  

  

  The 
  Retsof 
  shaft 
  was 
  begun, 
  not 
  on 
  the 
  limestone 
  of 
  the 
  

   encrinal 
  band, 
  but 
  133 
  feet 
  above 
  it 
  on 
  a 
  layer 
  of 
  fine 
  hard 
  

   limestone 
  eight 
  to 
  ten 
  inches 
  thick, 
  which 
  is 
  probably 
  identical 
  

   with 
  the 
  one 
  occurring 
  in 
  the 
  Livonia 
  shaft 
  at 
  the 
  depth 
  of 
  438 
  

   to 
  440 
  feet 
  from 
  the 
  surface. 
  Like 
  most 
  of 
  the 
  calcareous 
  layers 
  

   in 
  the 
  Hamilton 
  group, 
  it 
  contains 
  many 
  sections 
  of 
  crinoid 
  

   columns 
  as 
  well 
  as 
  other 
  fossils. 
  

  

  The 
  horizon 
  of 
  the 
  mouth 
  of 
  the 
  shaft 
  of 
  the 
  Greigsville 
  Salt 
  

   Mining 
  Company, 
  which 
  is 
  -situated 
  about 
  one 
  mile 
  west 
  and 
  one- 
  

   fourth 
  mile 
  south 
  of 
  the 
  Retsof 
  shaft, 
  is 
  twenty 
  feet 
  below 
  the 
  

   top 
  of 
  the 
  Hamilton 
  group. 
  One 
  of 
  the 
  patches 
  of 
  the 
  iron 
  

   pyrites 
  which 
  lie 
  between 
  the 
  Genesee 
  and 
  Hamilton 
  shales 
  was 
  

   exposed 
  in 
  a 
  shallow 
  excavation 
  in 
  the 
  side 
  of 
  the 
  hill 
  about 
  

   twenty-five 
  rods 
  west 
  of 
  the 
  shaft. 
  The 
  surface 
  elevation 
  is 
  

   ninety 
  feet 
  greater 
  at 
  the 
  Greigsville 
  shaft 
  than 
  at 
  the 
  Retsof. 
  

  

  The 
  Livingston 
  Salt 
  Company's 
  wells, 
  at 
  Piffard, 
  pass 
  through 
  

   186 
  feet 
  of 
  alluvium, 
  and 
  reach 
  rock 
  at 
  about 
  ten 
  feet 
  above 
  the 
  

   bottom 
  of 
  the 
  Hamilton. 
  

  

  The 
  Genesee 
  Salt 
  Company's 
  wells, 
  one-half 
  mile 
  south 
  of 
  the 
  

   Livingston 
  wells, 
  reaches 
  rock 
  at 
  sixty-four 
  feet 
  from 
  the 
  surface, 
  

   about 
  120 
  feet 
  above 
  the 
  bottom 
  of 
  the 
  Hamilton 
  group 
  in 
  the 
  

   Ludlowville 
  shales. 
  

  

  The 
  Phoenix 
  wells, 
  at 
  Cuylerville, 
  penetrate 
  one 
  hundred 
  and 
  

   eighty-four 
  feet 
  of 
  loam, 
  sand 
  and 
  clay, 
  reaching 
  rock 
  near 
  the 
  

   horizon 
  of 
  the 
  Encrinal 
  band 
  of 
  the 
  Hamilton 
  group. 
  The 
  mouths 
  

   of 
  the 
  wells 
  of 
  the 
  Lackawana 
  company 
  are 
  about 
  on 
  the 
  Styliola 
  

   band 
  of 
  the 
  Genesee 
  group 
  and 
  the 
  Royal 
  Company's 
  wells, 
  are 
  

   a 
  few 
  feet 
  higher 
  than 
  the 
  Styliola 
  limestone. 
  

  

  The 
  Nunda 
  and 
  Dansviile 
  wells 
  are 
  started 
  in 
  the 
  shales 
  and 
  

   flags 
  of 
  the 
  upper 
  part 
  of 
  the 
  Portage 
  group. 
  

  

  