﻿-36- 
  

  

  seen, 
  consequently, 
  how 
  completely 
  even 
  thoroughly 
  infected 
  areas 
  may 
  

   be 
  cleared 
  of 
  the 
  scale 
  by 
  this 
  fungus, 
  since 
  it 
  is 
  possible 
  that 
  only 
  those 
  

   scales 
  which 
  were 
  in 
  some 
  way 
  comparatively 
  deficient 
  in 
  vitality 
  were 
  

   actually 
  destroyed 
  by 
  the 
  parasite. 
  Contrary 
  to 
  this 
  supposition 
  we 
  

   have 
  only 
  the 
  observations 
  made 
  in 
  Florida, 
  where, 
  again, 
  it 
  is 
  not 
  

   impossible 
  that 
  other 
  and 
  inconspicuous 
  causes 
  have 
  conspired 
  with 
  the 
  

   Spluerostilbc 
  to 
  reduce 
  the 
  number 
  of 
  the 
  scale. 
  

  

  No 
  instance 
  could 
  be 
  found 
  either 
  at 
  .Sparta 
  or 
  at 
  Richview 
  of 
  the 
  

   appearance 
  of 
  the 
  fungus 
  on 
  trees 
  not 
  immediately 
  infected 
  by 
  Mr. 
  

   Forbes, 
  a 
  fact 
  doubtless 
  due 
  to 
  the 
  hard 
  and 
  tenacious 
  character 
  of 
  the 
  

   fruiting 
  growth, 
  which 
  is 
  such 
  that 
  the 
  spores 
  of 
  this 
  fungus 
  are 
  little 
  

   likely 
  to 
  be 
  carried 
  by 
  the 
  air. 
  Doubtless, 
  however, 
  after 
  a 
  time 
  birds 
  and 
  

   insects 
  passing 
  from 
  tree 
  to 
  tree 
  would 
  effect 
  these 
  transfers 
  accidentally. 
  

   On 
  the 
  other 
  hand, 
  it 
  is 
  but 
  little 
  work 
  to 
  snip 
  off 
  twigs 
  from 
  an 
  infected 
  

   tree 
  and 
  tie 
  them 
  to 
  branches 
  of 
  those 
  adjacent, 
  thus 
  securing 
  and 
  has- 
  

   tening 
  the 
  infection 
  process 
  which 
  a 
  single 
  season 
  should 
  suffice 
  to 
  make 
  

   general 
  on 
  any 
  badly 
  infested 
  premises. 
  Indeed 
  artificial 
  cultures 
  are 
  

   so 
  readily 
  made 
  in 
  quantity 
  and 
  capable 
  of 
  being 
  so 
  rapidly 
  applied 
  

   that 
  it 
  would 
  be 
  a 
  matter 
  of 
  little 
  difficulty 
  to 
  treat 
  a 
  large 
  orchard 
  com- 
  

   pletely, 
  provided 
  only 
  that 
  the 
  supply 
  of 
  the 
  cultivated 
  fungus 
  could 
  be 
  

   had 
  by 
  the 
  orchardist. 
  As 
  the 
  cultivation 
  of 
  this 
  fungus 
  parasite 
  

   retiuires 
  the 
  expert 
  methods 
  of 
  the 
  bacteriological 
  laboratory, 
  it 
  is 
  

   beyond 
  the 
  reach 
  of 
  the 
  farmer, 
  who 
  must 
  depend 
  upon 
  the 
  simpler 
  

   method 
  of 
  infection 
  except 
  where 
  the 
  state 
  or 
  some 
  private 
  expert 
  can 
  

   furnish 
  the 
  fungus 
  cultures 
  to 
  him 
  as 
  required. 
  

  

  Thinking 
  it 
  possible 
  that 
  scales 
  killed 
  by 
  the 
  fungus 
  would 
  be 
  gen- 
  

   erally 
  removed 
  from 
  the 
  tree, 
  and 
  the 
  dormant 
  fungus 
  with 
  them, 
  by 
  

   exposure 
  to 
  the 
  winter 
  weather, 
  I 
  took 
  measures 
  to 
  prevent 
  a 
  removal 
  

   by 
  this 
  means 
  of 
  all 
  the 
  fungus 
  growth 
  upon 
  infected 
  trees 
  by 
  having 
  

   selected 
  portions 
  of 
  the 
  infected 
  surfaces 
  on 
  each 
  tree 
  wrapped 
  with 
  

   cloth 
  early 
  in 
  November, 
  to 
  be 
  .left 
  on 
  all 
  winter. 
  I 
  have 
  thus 
  made 
  

   sure 
  that 
  each 
  infected 
  tree 
  will 
  have 
  upon 
  it 
  a 
  considerable 
  area 
  of 
  the 
  

   fruiting 
  fungus 
  in 
  the 
  spring 
  in 
  condition 
  to 
  renew 
  the 
  infection 
  in 
  1899. 
  

  

  Attempts 
  at 
  infection 
  of 
  the 
  San 
  Jose 
  scale 
  with 
  the 
  new 
  fungus 
  

   {A/icrocera 
  s/>.) 
  detected 
  in 
  the 
  Rose 
  Hill 
  orchard 
  in 
  northern 
  Florida 
  

   were 
  not 
  wholly 
  successful, 
  owing 
  perhaps 
  in 
  part 
  to 
  the 
  small 
  amount 
  

   of 
  the 
  fungus 
  available 
  for 
  experiment. 
  Applications 
  of 
  a 
  culture 
  made 
  

   on 
  corn 
  meal 
  and 
  beef 
  broth 
  were 
  so 
  far 
  successful 
  as 
  to 
  infect 
  the 
  

   scales 
  to 
  which 
  the 
  spores 
  were 
  applied, 
  but 
  there 
  was 
  no 
  considerable 
  

   spread, 
  in 
  the 
  single 
  experiment 
  made, 
  from 
  the 
  infected 
  area 
  to 
  the 
  

   adjacent 
  scales. 
  

  

  As 
  a 
  result 
  of 
  this 
  field 
  work 
  with 
  the 
  above-mentioned 
  fungous 
  

  

  