﻿184 
  Forty-seventh 
  Report 
  on 
  tee 
  State 
  Museum. 
  

  

  The 
  early 
  spring 
  did 
  not 
  bring 
  to 
  notice, 
  either 
  through 
  

   personal 
  observation 
  or 
  that 
  of 
  my 
  correspondents, 
  the 
  usual 
  

   number 
  of 
  injurious 
  insects. 
  The 
  earliest 
  to 
  claim 
  attention, 
  were 
  

   the 
  aphides, 
  or 
  plant-lice 
  — 
  more 
  or 
  less 
  abundant 
  every 
  year, 
  

   but 
  in 
  some 
  seasons 
  becoming 
  very 
  numerous 
  and 
  correspond- 
  

   ingly 
  destructive. 
  

  

  The 
  opening 
  of 
  the 
  apple-tree 
  buds 
  in 
  early 
  May 
  was 
  attended 
  

   with 
  such 
  an 
  unusual 
  abundance 
  of 
  the 
  apple-tree 
  aphis, 
  Aphis 
  

   mail 
  Fabr., 
  as 
  to 
  excite 
  apprehension 
  of 
  their 
  effect 
  upon 
  the 
  

   coming 
  fruit 
  crop. 
  Many 
  letters 
  were 
  sent 
  to 
  me 
  in 
  relation 
  to 
  

   them. 
  The 
  necessity 
  of 
  preventing 
  their 
  increase 
  by 
  spraying 
  

   was 
  urged 
  on 
  my 
  correspondents, 
  unless 
  a 
  heavy 
  and 
  continued 
  

   rain 
  should 
  occur 
  before 
  they 
  would 
  be 
  sheltered 
  by 
  the 
  leaves 
  — 
  

   say 
  within 
  ten 
  days 
  or 
  a 
  fortnight 
  after 
  their 
  hatching. 
  Mr. 
  C. 
  

   C. 
  Eisley, 
  Chairman 
  of 
  the 
  Executive 
  Committee 
  of 
  the 
  Hop 
  

   Growers 
  Association, 
  of 
  New 
  York, 
  writing 
  under 
  date 
  

   of 
  May 
  9th, 
  stated 
  that 
  hop 
  growers 
  were 
  reporting 
  

   large 
  numbers 
  of 
  plant-lice 
  on 
  the 
  buds 
  and 
  blossoms 
  of 
  fruit 
  

   trees 
  and 
  on 
  rose-bushes, 
  recalling 
  the 
  conditions 
  existing 
  

   in 
  the 
  spring 
  of 
  1886, 
  in 
  which 
  year 
  the 
  hop 
  crop 
  of 
  the 
  State 
  of 
  

   New 
  York 
  was 
  almost 
  wholly 
  destroyed 
  by 
  the 
  hop 
  vine 
  aphis. 
  

   This 
  year 
  the 
  fruit 
  trees 
  seemed 
  even 
  more 
  infested 
  than 
  the} 
  7 
  " 
  

   were 
  at 
  that 
  time. 
  He 
  especially 
  wished 
  to 
  know 
  what 
  signifi- 
  

   cance, 
  if 
  any, 
  this 
  might 
  have 
  with 
  respect 
  to 
  hop 
  injuries 
  the 
  

   present 
  year. 
  

  

  Answer 
  was 
  made 
  that 
  the 
  past 
  winter 
  had 
  apparently 
  been 
  

   very 
  favorable 
  for 
  the 
  protection 
  and 
  preservation 
  of 
  aphis 
  eggs, 
  

   and 
  unless 
  the 
  young, 
  recently 
  hatched 
  or 
  now 
  hatching 
  could 
  

   be 
  speedily 
  destroyed 
  by 
  a 
  heavy 
  rain 
  fall, 
  which, 
  at 
  this 
  stage 
  of 
  

   their 
  existence, 
  is 
  so 
  fatal 
  to 
  them, 
  we 
  would, 
  in 
  all 
  probability, 
  

   find 
  the 
  present 
  year 
  characterized 
  by 
  an 
  abundance 
  of 
  aphides 
  

   equal 
  to 
  that 
  of 
  1886. 
  It 
  was 
  therefore 
  recommended 
  that, 
  if 
  

   natural 
  causes 
  did 
  not 
  intervene 
  to 
  prevent 
  this 
  multiplication, 
  

   the 
  hop 
  growers, 
  on 
  the 
  first 
  appearance 
  of 
  the 
  insect 
  in 
  their 
  

   yards, 
  should 
  proceed 
  to 
  kill 
  them 
  by 
  proper 
  spraying 
  before 
  

   they 
  could 
  produce 
  new 
  generations 
  and 
  extend 
  over 
  the 
  entire 
  

   yards. 
  Directions 
  for 
  spraying 
  with 
  kerosene 
  emulsion 
  — 
  per- 
  

   haps 
  the 
  best 
  insecticide 
  for 
  use 
  against 
  this 
  insect 
  — 
  and 
  how 
  to 
  

   make 
  the 
  emulsion, 
  accompanied 
  the 
  letter. 
  

  

  