﻿476 
  Forty-seventh 
  Report 
  on 
  the 
  State 
  Museum. 
  

  

  gas 
  was 
  tested 
  in 
  another 
  locality. 
  The 
  pressure 
  of 
  gas 
  in 
  the 
  

   Knowersville 
  well 
  from 
  a 
  sandstone 
  stratum 
  only 
  six 
  inches 
  in 
  

   thickness 
  which 
  continued 
  for 
  eighteen 
  months, 
  seemed 
  to 
  indi- 
  

   cate 
  that 
  if 
  the 
  sandstone 
  stratum 
  was 
  thicker 
  it 
  would 
  contain 
  a 
  

   proportionately 
  larger 
  supply 
  of 
  gas. 
  In 
  order 
  to 
  determine 
  

   whether 
  or 
  not 
  this 
  gas 
  sand 
  was 
  thicker 
  elsewhere 
  a 
  second 
  well 
  

   was 
  drilled. 
  This 
  was 
  located 
  on 
  the 
  Finch 
  farm 
  in 
  Knox 
  town- 
  

   ship 
  four 
  and 
  one-half 
  miles 
  a 
  little 
  west 
  of 
  north 
  from 
  the 
  

   Knowersville 
  well. 
  

  

  The 
  elevation 
  of 
  the 
  top 
  of 
  the 
  Knox 
  well, 
  1,155 
  feet 
  above 
  

   tide 
  or 
  645 
  feet 
  above 
  the 
  mouth 
  of 
  the 
  first 
  well. 
  The 
  well 
  was 
  

   begun 
  in 
  the 
  Hudson 
  river 
  group 
  of 
  rocks. 
  The 
  geological 
  horizon 
  

   of 
  the 
  gas 
  sand 
  in 
  the 
  Knowersville 
  well 
  was 
  passed 
  through 
  in 
  

   the 
  Knox 
  well 
  between 
  1,000 
  and 
  1,050 
  feet, 
  but 
  no 
  gas 
  was 
  

   found. 
  Drilling 
  was 
  stopped 
  in 
  this 
  well 
  at 
  a 
  depth 
  of 
  2,200 
  feet 
  

   or 
  1,200 
  feet 
  above 
  the 
  top 
  of 
  the 
  Trenton 
  limestone.* 
  

  

  Water 
  Power. 
  ' 
  

  

  The 
  principal 
  water 
  power 
  in 
  the 
  county 
  is 
  supplied 
  by 
  the 
  

   Mohawk 
  river 
  at 
  Cohoes. 
  To 
  this 
  power 
  alone 
  the 
  flourishing 
  

   city 
  owes 
  its 
  existence. 
  The 
  Mohawk 
  is 
  about 
  175 
  miles 
  long 
  

   and 
  drains 
  a 
  territory 
  which 
  is 
  on 
  an 
  average 
  20 
  miles 
  wide. 
  

   The 
  total 
  drainage 
  area 
  is 
  thus 
  about 
  3,500 
  square 
  miles. 
  Before 
  

   reaching 
  Cohoes 
  the 
  river 
  has 
  received 
  the 
  last 
  of 
  its 
  larger 
  

   tributaries, 
  so 
  that 
  at 
  this 
  point 
  the 
  stream 
  has 
  reached 
  its 
  

   maximum 
  power. 
  

  

  At 
  the 
  city 
  the 
  river 
  falls 
  over 
  an 
  abrupt 
  precipice, 
  seventy 
  feet 
  

   high, 
  of 
  Hudson 
  river 
  slate. 
  From 
  this 
  point 
  to 
  the 
  Hudson 
  it 
  

   runs 
  a 
  wide 
  and 
  rapid 
  stream, 
  part 
  of 
  the 
  distance 
  between 
  rocky 
  

   walls 
  and 
  all 
  of 
  the 
  way 
  over 
  a 
  jagged 
  bed 
  of 
  slate. 
  

  

  The 
  rights 
  of 
  this 
  power 
  are 
  owned 
  entirely 
  by 
  the 
  " 
  Cohoes 
  

   Company." 
  In 
  order 
  to 
  divert 
  the 
  water 
  of 
  the 
  river 
  a 
  great 
  dam 
  

   has 
  been 
  constructed 
  about 
  one 
  mile 
  above 
  the 
  city. 
  This 
  dam 
  

   is 
  1,443 
  feet 
  long. 
  The 
  gate 
  house 
  is 
  218 
  feet 
  in 
  length, 
  in 
  

   addition 
  to 
  the 
  above, 
  making 
  a 
  total 
  length 
  of 
  1,661 
  feet. 
  

   The 
  total 
  fall 
  of 
  the 
  water 
  from 
  top 
  of 
  the 
  dam 
  to 
  the 
  point 
  

   of 
  discharge 
  below 
  the 
  falls 
  is 
  125 
  feet. 
  

  

  * 
  The 
  notes 
  on 
  the 
  gas 
  wells 
  drilled 
  in 
  Albany 
  county 
  are 
  from 
  «' 
  Petroleum 
  and 
  Natural 
  Gas 
  in 
  

   New 
  York 
  State," 
  by 
  Chas. 
  A. 
  Ashburner, 
  M. 
  S., 
  C. 
  E. 
  A 
  paper 
  read 
  before 
  the 
  American 
  

   Institute 
  of 
  Mining 
  Engineers, 
  Duluth, 
  meeting 
  July, 
  1887, 
  and 
  revised 
  in 
  June, 
  1888. 
  

  

  