﻿38 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  seemed 
  to 
  be 
  safely 
  drawn 
  that 
  in 
  1890, 
  due 
  to 
  changes 
  in 
  forest 
  

   area 
  and 
  in 
  quality 
  of 
  crops 
  grown, 
  the 
  amount 
  of 
  water 
  re- 
  

   quired 
  in 
  Wyoming 
  county 
  to 
  support 
  vegetation 
  during 
  the 
  

   growing 
  season 
  would 
  amount 
  to 
  3.4 
  inches 
  more 
  than 
  in 
  1850. 
  

   Why 
  a 
  mill 
  stream 
  in 
  Wyoming 
  county, 
  which 
  was 
  ample 
  for 
  all 
  

   demands 
  in 
  1850, 
  entirely 
  failed 
  in 
  1890 
  seemed, 
  therefore, 
  fully 
  

   explained. 
  

  

  In 
  order 
  to 
  determine 
  whether 
  such 
  conclusion 
  was 
  in 
  accord 
  

   with 
  the 
  rainfall 
  records 
  of 
  western 
  New 
  York, 
  a 
  large 
  number 
  

   of 
  such 
  were 
  tabulated 
  in 
  periods, 
  with 
  December 
  to 
  May, 
  in- 
  

   clusive, 
  making 
  the 
  storage 
  period; 
  June 
  to 
  August, 
  inclusive, 
  

   the 
  growing 
  period, 
  and 
  September 
  to 
  November, 
  inclusive, 
  the 
  

   replenishing 
  period. 
  From 
  a 
  tabulation 
  of 
  the 
  rainfall 
  records 
  

   kept 
  at 
  Middlebury 
  Academy, 
  in 
  Wyoming 
  county, 
  for 
  certain 
  

   years 
  — 
  seventeen 
  in 
  all 
  — 
  from 
  1826 
  to 
  1848, 
  inclusive, 
  the 
  mean 
  

   rainfall 
  for 
  the 
  growing 
  period 
  was 
  determined 
  at 
  9.52 
  inches. 
  

   In 
  1832 
  it 
  was 
  only 
  6.76 
  inches. 
  The 
  maximum 
  at 
  Middlebury 
  

   Academy 
  was 
  14.36 
  inches 
  in 
  the 
  growing 
  period 
  of 
  1828. 
  Tabu- 
  

   lating 
  more 
  recent 
  records 
  it 
  was 
  found 
  that 
  at 
  Arcade, 
  in 
  

   Wyoming 
  county, 
  from 
  1891 
  to 
  1896, 
  the 
  mean 
  of 
  the 
  growing 
  

   period 
  was 
  13.61 
  inches, 
  the 
  minimum 
  of 
  9.62 
  inches 
  occurring 
  

   in 
  1894. 
  At 
  Leroy, 
  in 
  the 
  adjoining 
  county 
  of 
  Genesee, 
  the 
  

   mean 
  of 
  the 
  growing 
  period 
  from 
  1891 
  to 
  1895, 
  inclusive, 
  was 
  

   10.31 
  inches, 
  the 
  minimum 
  being 
  6.61 
  inches 
  in 
  1894. 
  At 
  

   Rochester 
  the 
  records 
  show 
  a 
  mean 
  of 
  the 
  growing 
  period 
  for 
  the 
  

   years 
  1871 
  to 
  1896, 
  inclusive, 
  of 
  8.29 
  inches, 
  the 
  minim 
  am 
  being 
  

   only 
  5 
  inches 
  in 
  1887. 
  It 
  appeared, 
  therefore, 
  that 
  at 
  the 
  

   present 
  time, 
  with 
  the 
  catchment 
  areas 
  almost 
  entirely 
  de- 
  

   forested, 
  streams 
  must 
  necessarily 
  be 
  very 
  low 
  during 
  the 
  sum- 
  

   mer 
  season 
  of 
  nearly 
  every 
  year. 
  Practical 
  observation 
  in 
  

   western 
  New 
  York 
  amply 
  confirms 
  this 
  theoretical 
  deduction. 
  1 
  

  

  Variation 
  in 
  water 
  yield. 
  The 
  runoff 
  of 
  Niagara 
  river 
  has 
  been 
  

   commonly 
  assumed 
  on 
  the 
  authority 
  of 
  the 
  Lake 
  Survey 
  at 
  about 
  

  

  l 
  Abstract 
  from 
  Stream 
  Flow 
  in 
  Relation 
  to 
  Forests, 
  by 
  George 
  W. 
  Rafter, 
  

   in 
  An. 
  Rept. 
  of 
  Fisheries, 
  Game 
  and 
  Forest 
  Commission 
  for 
  1896. 
  The 
  

   portion 
  relating 
  to 
  Risler's 
  experiments 
  is 
  from 
  paper 
  on 
  the 
  Data 
  of 
  

   Stream 
  Flow 
  in 
  Relation 
  to 
  Forests. 
  

  

  