﻿on 
  corn 
  meal 
  and 
  beef 
  broth 
  as 
  a 
  preparation 
  for 
  extensive 
  inoculations 
  

   of 
  the 
  San 
  Jose 
  scale 
  in 
  the 
  orchards 
  of 
  southern 
  Illinois. 
  In 
  the 
  

   meantime 
  a 
  personal 
  visit 
  to 
  the 
  peach 
  and 
  pear 
  orchards 
  of 
  northern 
  

   Florida 
  gave 
  me 
  reason 
  to 
  expect 
  a 
  favorable 
  result 
  in 
  Illinois, 
  and 
  it 
  

   likewise 
  put 
  me 
  in 
  possession 
  of 
  a 
  considerable 
  amount 
  of 
  fresh 
  mate- 
  

   rial 
  in 
  the 
  form 
  of 
  twigs 
  of 
  trees 
  infested 
  by 
  the 
  oak 
  scale 
  killed 
  by 
  the 
  

   SpJuerostilbe 
  spontaneous 
  on 
  that 
  insect. 
  

  

  My 
  principal 
  observations 
  in 
  Florida 
  were 
  made 
  on 
  the 
  20th 
  of 
  

   March 
  in 
  the 
  vicinity 
  of 
  De 
  Funiak 
  Springs, 
  when, 
  in 
  company 
  with 
  

   Professor 
  Rolfs, 
  of 
  the 
  Florida 
  Agricultural 
  Experiment 
  Station, 
  I 
  care- 
  

   fully 
  examined 
  three 
  peach 
  orchards. 
  In 
  the 
  first 
  of 
  these, 
  the 
  Rose 
  

   Hill 
  orchard, 
  there 
  were 
  but 
  very 
  few 
  of 
  the 
  San 
  Jose 
  scale 
  to 
  be 
  found, 
  

   the 
  number 
  having 
  greatly 
  decreased 
  within 
  the 
  last 
  four 
  years. 
  These 
  

   trees 
  had 
  been 
  sprayed 
  with 
  rosin, 
  potash, 
  and 
  sulphur 
  during 
  the 
  winter 
  

   of 
  1893 
  and 
  1894, 
  but 
  had 
  never 
  been 
  artificially 
  infected 
  with 
  the 
  

   scale 
  fungus. 
  We 
  found, 
  nevertheless, 
  on 
  a 
  single 
  tree 
  a 
  very 
  few 
  speci- 
  

   mens 
  of 
  the 
  San 
  Jose 
  scale 
  with 
  a 
  fungus 
  parasite 
  which 
  seemed 
  to 
  be 
  

   the 
  Sphcerostilbe 
  coccophila 
  and 
  was 
  so 
  taken 
  by 
  us 
  at 
  the 
  time. 
  Subse- 
  

   quent 
  study 
  on 
  my 
  return 
  showed, 
  however, 
  that 
  the 
  fungus 
  in 
  this 
  

   orchard 
  was 
  of 
  a 
  form 
  closely 
  related 
  to 
  S. 
  coccophi/a, 
  but 
  of 
  a 
  species 
  

   apparently 
  new. 
  It 
  is 
  distinguished 
  not 
  only 
  by 
  the 
  smaller 
  and 
  much 
  

   more 
  strongly 
  arcuate 
  conidia, 
  but 
  also 
  by 
  strongly 
  marked 
  culture 
  

   characters. 
  The 
  color 
  of 
  a 
  mature 
  culture, 
  for 
  example, 
  is 
  not 
  red 
  but 
  

   a 
  dusky 
  brown 
  with 
  a 
  slightly 
  reddish 
  tinge, 
  and 
  identical 
  culture 
  pro- 
  

   cesses 
  and 
  media 
  with 
  those 
  which 
  yield 
  the 
  arcuate 
  conidia 
  of 
  SpJiceros- 
  

   tilbe 
  coccophila 
  give 
  with 
  this 
  only 
  masses 
  of 
  minute 
  oval 
  spores.* 
  

  

  A 
  second 
  orchard, 
  belonging 
  to 
  Mr. 
  Mellish, 
  had 
  originally 
  been 
  

   heavily 
  infested 
  with 
  the 
  San 
  Jose 
  scale, 
  but 
  this 
  had 
  now 
  almost 
  

   entirely 
  disappeared. 
  The 
  scale 
  in 
  this 
  orchard 
  had 
  been 
  inoculated 
  in 
  

   August, 
  1897, 
  by 
  tying 
  to 
  branches 
  of 
  the 
  infested 
  trees 
  pieces 
  of 
  twigs 
  

   of 
  the 
  oak 
  bearing 
  the 
  scale 
  fungus. 
  At 
  the 
  time 
  of 
  my 
  visit 
  only 
  a 
  very 
  

   few 
  living 
  scales 
  could 
  be 
  found, 
  and 
  among 
  the 
  dead 
  occasionally 
  

   one 
  still 
  remained 
  with 
  an 
  obvious 
  growth 
  of 
  Sp/uerostiibe 
  projecting 
  

   from 
  beneath 
  the 
  edge. 
  This 
  scale 
  fungus 
  was 
  found 
  not 
  only 
  upon 
  

   trees 
  to 
  which 
  infested 
  twigs 
  had 
  been 
  tied, 
  but 
  upon 
  others 
  adjacent 
  to 
  

   them, 
  indicating 
  a 
  spread 
  from 
  tree 
  to 
  tree. 
  According 
  to 
  the 
  owner's 
  

   statements 
  the 
  surface 
  of 
  many 
  of 
  these 
  trees 
  had 
  been 
  conspicuously 
  

   reddened 
  by 
  an 
  abundant 
  development 
  of 
  the 
  fungus 
  on 
  the 
  scale, 
  these 
  

   growths 
  having 
  subsequently 
  been 
  removed, 
  with 
  the 
  dead 
  scales 
  them- 
  

  

  * 
  Letters 
  received 
  from 
  Professor 
  Rolfs 
  since 
  my 
  visit 
  to 
  Florida 
  notify 
  me 
  of 
  the 
  

   frequent 
  finding 
  of 
  this 
  fungus 
  there 
  on 
  the 
  San 
  Jose 
  scale 
  and 
  other 
  species. 
  

  

  