﻿CHAPTER 
  III, 
  

  

  THE 
  EOGKY 
  MOUXTAIIS" 
  LOCUST 
  IN 
  WYOMIISTG, 
  MONTAIS'A, 
  

  

  ETC., 
  m 
  1881. 
  

  

  West 
  Point, 
  Kebr., 
  January 
  10, 
  1882. 
  

  

  Sir: 
  I 
  have 
  tlie 
  honor 
  to 
  report 
  the 
  following 
  in 
  reference 
  to 
  my 
  trip 
  

   through 
  portions 
  of 
  the 
  West 
  and 
  Northwest, 
  as 
  entomological 
  agent 
  

   for 
  the 
  United 
  States 
  Department 
  of 
  Agricnlture, 
  in 
  studying 
  various 
  

   insects 
  injurious 
  to 
  agriculture, 
  and 
  more 
  particularly 
  in 
  accumulating 
  

   additional 
  data 
  in 
  reference 
  to 
  the 
  Eocky 
  Mountain 
  locust 
  (0. 
  spretus). 
  

  

  At 
  the 
  time 
  of 
  receiving 
  my 
  appointment, 
  I 
  was 
  in 
  Greeley, 
  Golo., 
  and 
  

   at 
  once 
  went 
  to 
  work 
  by 
  making 
  excursions 
  in 
  various 
  directions 
  into 
  

   the 
  surrounding 
  country. 
  These 
  were 
  made 
  while 
  connected 
  with 
  the 
  

   construction 
  work 
  of 
  several 
  new 
  lines 
  of 
  railroad 
  which 
  were 
  being 
  

   built 
  by 
  the 
  Union 
  Pacific 
  Eailroad 
  Company, 
  hence 
  were 
  of 
  no 
  expense 
  

   to 
  the 
  Department 
  other 
  than 
  my 
  salary. 
  Afterwards 
  I 
  also 
  accom- 
  

   panied 
  Professors 
  Lester 
  F. 
  Ward 
  and 
  C. 
  A. 
  White, 
  of 
  the 
  United 
  States 
  

   Geological 
  Survey, 
  in 
  several 
  of 
  their 
  drives 
  into 
  the 
  country 
  adjacent. 
  

   These 
  short 
  excursions 
  took 
  me 
  over 
  a 
  considerable 
  area 
  of 
  the 
  farming 
  

   portion 
  of 
  (Colorado, 
  and 
  also 
  out 
  into 
  the 
  plains 
  lying 
  to 
  the 
  eastward 
  

   down 
  the 
  Platte 
  and 
  its 
  tributaries. 
  

  

  Upon 
  receiving 
  further 
  instructions 
  1 
  proceeded 
  west, 
  working 
  along 
  

   the 
  line 
  of 
  the 
  Union 
  Pacific 
  Eailway, 
  which 
  was 
  left 
  from 
  time 
  to 
  time 
  

   to 
  make 
  short 
  excursions 
  into 
  the 
  adjoining 
  districts, 
  where 
  it 
  was 
  re- 
  

   ported 
  the 
  locusts 
  had 
  done 
  damage 
  to 
  crops 
  and 
  vegetation 
  generally, 
  

   and 
  this, 
  too, 
  within 
  the 
  past 
  few 
  years. 
  The 
  principal 
  of 
  these 
  was 
  

   that 
  of 
  following 
  up 
  Ham's 
  Fork 
  of 
  Green 
  Eiver 
  to 
  Hodge's 
  Pass, 
  and 
  

   about 
  10 
  miles 
  down 
  the 
  western 
  slope 
  towards 
  Bear 
  Eiver. 
  In 
  making 
  

   this 
  trip 
  I 
  succeeded 
  in 
  establishing 
  some 
  important 
  facts 
  in 
  reference 
  

   to 
  the 
  movements 
  of 
  C. 
  spretus 
  in 
  this 
  part 
  of 
  Wyoming, 
  and 
  also 
  in 
  

   adding 
  somewhat 
  to 
  our 
  knowledge 
  of 
  its 
  natural 
  history, 
  which 
  may 
  

   be 
  of 
  value 
  in 
  fighting 
  it 
  hereafter. 
  

  

  I 
  then 
  proceeded 
  to 
  Ogden, 
  Utah, 
  where 
  I 
  took 
  the 
  train 
  north 
  over 
  

   the 
  Utah 
  and 
  IsTorthern 
  Eailroad, 
  into 
  tbe 
  valley 
  of 
  the 
  Snake 
  Eiver, 
  

   where 
  I 
  obtained 
  data 
  in 
  reference 
  to 
  the 
  movements 
  of 
  this 
  insect 
  in 
  

   that 
  part 
  of 
  Idaho; 
  thence 
  working 
  northward 
  and 
  westward 
  through 
  

   the 
  valleys 
  of 
  the 
  Big 
  Hole, 
  Deer 
  Lodge, 
  Hellgate, 
  and 
  Missoula 
  Elvers, 
  

   thus 
  taking 
  in 
  a 
  large 
  portion 
  of 
  Montana 
  hitherto 
  not 
  visited 
  by 
  any 
  

   member 
  of 
  the 
  Commission. 
  

  

  21 
  

  

  