﻿REPORT 
  OF 
  THE 
  STATE 
  ENTOMOLOGIST 
  263 
  

  

  Remedies. 
  

  

  The 
  proper 
  and 
  most 
  satisfactory 
  method 
  of 
  dealing 
  with 
  this 
  insect 
  is 
  

   by 
  spraying 
  with 
  the 
  arsenites 
  (one 
  pound 
  Paris 
  green 
  to 
  200 
  gallons 
  

   of 
  water) 
  when 
  the 
  recently 
  hatched 
  larvae 
  are 
  beginning 
  to 
  feed, 
  as 
  has 
  

   been 
  frequently 
  pointed 
  out 
  before. 
  Unfortunately 
  for 
  the 
  general 
  

   adoption 
  of 
  this 
  means, 
  the 
  machinery 
  necessary 
  for 
  spraying 
  large 
  trees 
  

   is 
  so 
  expensive 
  as 
  to 
  place 
  it 
  beyond 
  the 
  reach 
  of 
  many. 
  Where 
  a 
  large 
  

   number 
  of 
  the 
  shade 
  trees 
  in 
  a 
  city 
  are 
  to 
  be 
  treated, 
  some 
  form 
  of 
  a 
  

   steam 
  apparatus 
  for 
  spraying 
  appears 
  to 
  do 
  the 
  v/ork 
  with 
  the 
  greatest 
  

   efficiency 
  and 
  economy. 
  Although 
  the 
  machinery 
  may 
  be 
  expensive, 
  the 
  

   cost 
  of 
  spraying 
  per 
  tree 
  is 
  by 
  no 
  means 
  large. 
  The 
  abundance 
  of 
  the 
  

   elm-leaf 
  beetle 
  in 
  various 
  cities 
  has 
  forced 
  the 
  authorities 
  to 
  resort 
  to 
  

   efficient 
  means 
  for 
  protecting 
  the 
  trees. 
  The 
  cities 
  of 
  New 
  Haven, 
  

   Conn. 
  ; 
  Springfield 
  and 
  Holyoke, 
  Mass. 
  ; 
  and 
  Brooklyn, 
  N. 
  Y., 
  have 
  had 
  

   constructed 
  various 
  successful 
  forms 
  of 
  steam 
  sprayers. 
  Some 
  difficulty 
  

   was 
  experienced 
  in 
  using 
  the 
  machines 
  in 
  these 
  cities, 
  either 
  on 
  account 
  

   of 
  their 
  large 
  size 
  or 
  the 
  noise 
  made 
  by 
  them 
  while 
  in 
  operation. 
  In 
  New 
  

   Haven 
  it 
  was 
  found 
  necessary 
  to 
  close 
  the 
  street 
  during 
  the 
  spraying 
  to 
  

   avoid 
  frightening 
  the 
  horses. 
  Among 
  the 
  best 
  of 
  these 
  may 
  be 
  men- 
  

   tioned 
  the 
  spraying 
  apparatus 
  constructed 
  under 
  the 
  supervision 
  of 
  Dr. 
  

   E. 
  B. 
  Southwick 
  for 
  the 
  department 
  of 
  public 
  parks 
  of 
  the 
  city 
  of 
  New 
  York. 
  

   It 
  consists 
  of 
  a 
  '' 
  Diamler" 
  gasolene 
  motor 
  connected 
  with 
  a 
  three-piston 
  

   Gould 
  pump, 
  the 
  latter 
  the 
  smallest 
  size 
  of 
  that 
  pattern. 
  The 
  motor 
  

   and 
  the 
  pump 
  weigh 
  about 
  300 
  pounds. 
  The 
  whole 
  can 
  be 
  placed 
  in 
  a 
  

   spring 
  wagon 
  with 
  a 
  100 
  gallon, 
  or 
  larger, 
  tank. 
  The 
  motor 
  costs 
  $250, 
  

   and 
  the 
  pump 
  about 
  $50. 
  The 
  machine 
  can 
  be 
  operated 
  at 
  the 
  cost 
  

   of 
  but 
  a 
  few 
  cents 
  a 
  day 
  and 
  makes 
  so 
  little 
  noise 
  when 
  running 
  as 
  

   to 
  scarcely 
  attract 
  the 
  attention 
  of 
  passing 
  horses. 
  This 
  apparatus 
  will 
  

   probably 
  be 
  found 
  much 
  more 
  satisfactory 
  dian 
  any 
  makeshift, 
  although 
  

   it 
  involves 
  a 
  greater 
  outlay 
  at 
  first. 
  For 
  description 
  of 
  this 
  apparatus, 
  

   see 
  the 
  excellent 
  paper 
  by 
  Dr. 
  L. 
  O. 
  Howard 
  on 
  " 
  The 
  use 
  of 
  steam 
  ap- 
  

   paratus 
  for 
  spraying," 
  in 
  the 
  Year 
  Book 
  of 
  the 
  U. 
  S. 
  Department 
  of 
  Agri- 
  

   culture 
  for 
  1896, 
  pages 
  69 
  to 
  88, 
  from 
  which 
  the 
  preceding 
  has 
  been 
  

   taken. 
  

  

  There 
  are 
  now, 
  and 
  probably 
  will 
  be, 
  a 
  number 
  of 
  cities 
  and 
  large 
  vil- 
  

   lages 
  where 
  this 
  pest 
  is 
  prosecuting 
  its 
  destructive 
  work, 
  and 
  where 
  those 
  

   in 
  authority 
  will 
  not 
  take 
  the 
  steps 
  necessary 
  for 
  protection 
  against 
  it. 
  In 
  

   such 
  localities 
  there 
  is 
  an 
  opportunity 
  for 
  some 
  enterprising 
  individual 
  

   to 
  fit 
  up 
  the 
  proper 
  apparatus 
  and 
  contract 
  with 
  property 
  owners 
  for 
  

   spraying 
  their 
  trees 
  either 
  at 
  so 
  much 
  a 
  tree, 
  or 
  at 
  so 
  much 
  for 
  the 
  season. 
  

  

  