﻿-38- 
  

  

  foot, 
  though 
  upward 
  spread 
  is 
  less 
  than 
  downward. 
  The 
  spores 
  are 
  

   evidently 
  carried 
  by 
  rains 
  and 
  no 
  spread 
  across 
  an 
  air 
  space 
  was 
  here 
  

   noted. 
  On 
  one 
  tree 
  six 
  inches 
  in 
  diameter 
  I 
  placed 
  originally 
  four 
  

   pieces 
  of 
  infected 
  material. 
  The 
  fungus 
  had 
  now 
  spread 
  from 
  one 
  

   ])icce 
  downward 
  two 
  feet, 
  as 
  far 
  as 
  the 
  patch 
  of 
  scale 
  extended, 
  but 
  

   upward 
  not 
  at 
  all. 
  By 
  no 
  means 
  all 
  the 
  scales 
  were 
  killed, 
  however, 
  on 
  

   the 
  area 
  showing 
  the 
  fungus 
  growth. 
  From 
  another 
  piece 
  the 
  fungus 
  

   had 
  spread 
  upward 
  on 
  two 
  branches 
  a 
  foot 
  and 
  a 
  half, 
  down 
  on 
  one 
  

   branch 
  two 
  feet 
  and 
  a 
  half 
  to 
  the 
  trunk 
  of 
  the 
  tree, 
  and 
  out 
  to 
  an 
  equal 
  

   distance 
  on 
  a 
  lateral 
  branch. 
  From 
  the 
  third 
  piece 
  it 
  had 
  gone 
  down- 
  

   ward 
  three 
  feet 
  and 
  a 
  half, 
  out 
  six 
  inches 
  on 
  a 
  twig, 
  but 
  upward 
  not 
  at 
  

   all. 
  From 
  the 
  fourth 
  piece 
  it 
  had 
  spread 
  upward 
  six 
  inches 
  and 
  down- 
  

   ward 
  a 
  foot 
  and 
  a 
  half. 
  On 
  another 
  tree, 
  five 
  inches 
  in 
  diameter, 
  to 
  

   which 
  six 
  pieces 
  of 
  bark 
  had 
  been 
  tied, 
  the 
  spread 
  of 
  the 
  fungus 
  has 
  

   been 
  so 
  general 
  that 
  it 
  cannot 
  now 
  be 
  traced. 
  Except 
  for 
  the 
  smaller 
  

   and 
  upward 
  twigs 
  and 
  branches 
  the 
  tree 
  is 
  now 
  thoroughly 
  infected. 
  In 
  

   some 
  cases 
  the 
  fungus 
  must 
  have 
  gone 
  laterally 
  as 
  much 
  as 
  six 
  feet 
  or 
  

   else 
  the 
  spores 
  were 
  carried 
  across 
  an 
  air 
  space. 
  In 
  another 
  tree, 
  seven 
  

   inches 
  in 
  diameter, 
  to 
  which 
  five 
  pieces 
  of 
  the 
  infected 
  material 
  had 
  

   been 
  applied, 
  the 
  fungus 
  had 
  spread 
  from 
  the 
  first 
  piece 
  eighteen 
  inches 
  

   upward 
  at 
  an 
  angle 
  of 
  45 
  ; 
  directly 
  upward 
  six 
  inches; 
  ten 
  inches 
  up- 
  

   ward 
  on 
  another 
  branch 
  at 
  an 
  angle 
  of 
  40 
  ; 
  and 
  downward 
  fully 
  three 
  

   feet. 
  From 
  a 
  second 
  piece 
  it 
  has 
  gone 
  downward 
  twenty 
  inches 
  and 
  

   thence 
  out 
  on 
  a 
  lateral 
  twenty-six 
  inches. 
  From 
  a 
  third 
  it 
  had 
  spread 
  a 
  

   foot 
  obliquely 
  upward 
  and 
  ten 
  inches 
  horizontally. 
  From 
  a 
  fourth 
  it 
  

   had 
  gone 
  upward 
  a 
  foot 
  on 
  three 
  branches 
  and 
  down 
  sixteen 
  inches. 
  

   F>om 
  a 
  fifth 
  it 
  had 
  spread 
  upward 
  six 
  inches, 
  down 
  two 
  feet 
  to 
  rough 
  

   bark 
  free 
  from 
  scales, 
  and 
  out 
  sixteen 
  inches 
  on 
  a 
  lateral 
  branch. 
  

  

  November 
  2d, 
  wrapped 
  with 
  cloth 
  strip 
  and 
  tied 
  with 
  string 
  one 
  

   spot 
  on 
  each 
  infected 
  tree. 
  No 
  great 
  increase 
  in 
  quantity 
  of 
  fungus 
  

   since 
  my 
  visit 
  September 
  ist, 
  although 
  in 
  a 
  number 
  of 
  cases 
  the 
  infec- 
  

   tion 
  has 
  gone 
  from 
  limb 
  to 
  limb 
  in 
  a 
  way 
  to 
  suggest 
  that 
  the 
  spread 
  has 
  

   been 
  due 
  to 
  the 
  blowing 
  of 
  spores 
  in 
  rain 
  drops 
  from 
  an 
  infected 
  sur- 
  

   face 
  to 
  one 
  previously 
  free. 
  In 
  some 
  situations 
  the 
  growth 
  has 
  a 
  faded 
  

   color 
  and 
  a 
  washed-out 
  look, 
  from 
  which 
  I 
  am 
  led 
  to 
  suspect 
  that 
  the 
  

   weather 
  has 
  been 
  too 
  cold 
  and 
  rainy 
  for 
  a 
  profuse 
  growth 
  and 
  rapid 
  

   spread 
  of 
  the 
  fungus. 
  

  

  Orchard 
  of 
  James 
  Wood, 
  Jr. 
  — 
  May 
  28th, 
  twenty-six 
  trees 
  infected 
  

   with 
  Sphxrostilbe 
  grown 
  on 
  corn-meal 
  batter. 
  For 
  a 
  description 
  of 
  the 
  

   method 
  of 
  application 
  of 
  this 
  fungus 
  culture 
  see 
  page 
  34. 
  June 
  21st, 
  

   found 
  in 
  this 
  orchard 
  a 
  single 
  scale 
  which 
  had 
  died 
  from 
  the 
  fungous 
  

   infection. 
  In 
  this 
  tree 
  the 
  cloth 
  wrappers 
  were 
  accidentally 
  overlooked 
  

  

  