﻿l82 
  

  

  BOTANICAL 
  GAZETTE. 
  

  

  [ 
  July, 
  

  

  Diseases 
  of 
  plants.' 
  

  

  The 
  general 
  interest 
  in 
  the 
  subject 
  of 
  the 
  specific 
  diseases 
  of 
  plants 
  

   and 
  of 
  their 
  treatment 
  has 
  grown 
  much 
  faster 
  than 
  has 
  a 
  corresponding 
  

   literature. 
  The 
  Germans 
  have 
  a 
  few 
  good 
  general 
  treatises 
  on 
  plant 
  pa- 
  

   thology, 
  both 
  technical 
  and 
  non-technical, 
  but 
  in 
  Eaglish 
  the 
  publication 
  

   of 
  such 
  works 
  has 
  barely 
  begun. 
  Smith's 
  " 
  Diseases 
  of 
  Field 
  Crops/ 
  

   which 
  appeared 
  some 
  time 
  ago, 
  is 
  in 
  many 
  respects 
  excellent, 
  but 
  con- 
  

   tains 
  paragraphs 
  and 
  almost 
  whole 
  chapters 
  of 
  controversial 
  matters 
  

   neither 
  interesting 
  nor 
  edifying 
  to 
  the 
  general 
  reader. 
  This 
  was 
  the 
  first 
  

   general 
  work 
  on 
  plant 
  diseases 
  in 
  the 
  English 
  language 
  ; 
  the 
  second 
  one' 
  

   has 
  just 
  appeared. 
  It 
  reminds 
  one 
  of 
  its 
  predecessors 
  in 
  the 
  make-up 
  of 
  

   the 
  volume, 
  but 
  not 
  at 
  all 
  in 
  the 
  manner 
  of 
  treating 
  the 
  subject. 
  The 
  

   author, 
  Professor 
  Ward, 
  is 
  known 
  to 
  American 
  botanists 
  not 
  only 
  by 
  his 
  

   able 
  investigations, 
  but 
  also 
  by 
  the 
  admirable 
  diction 
  of 
  his 
  scientific 
  arti- 
  

   cles. 
  The 
  present 
  work 
  is 
  in 
  a 
  line 
  with 
  his 
  other 
  writings, 
  and 
  is 
  to 
  be 
  

   commended 
  for 
  the 
  careful 
  arrangement 
  of 
  the 
  subject 
  and 
  its 
  clear 
  and 
  

   trustworthy 
  treatment. 
  It 
  is 
  intended 
  as 
  an 
  introduction 
  to 
  the 
  subject 
  

   for 
  non 
  technical 
  readers. 
  The 
  book 
  opens 
  with 
  a 
  happy 
  discussion 
  of 
  

   the 
  meannig 
  of 
  disease 
  in 
  plants, 
  and 
  then 
  proceeds 
  to 
  the 
  consideration 
  

   of 
  a 
  few 
  common 
  diseases, 
  such 
  as 
  "damping 
  off" 
  of 
  seedlings, 
  club 
  root 
  

   of 
  cabbage, 
  potato 
  rot, 
  wheat 
  and 
  oat 
  smut, 
  ergot 
  of 
  rye, 
  bladder-plums 
  

   hop 
  mildew 
  and 
  wheat 
  rust. 
  The 
  very 
  simple 
  and 
  accurate 
  treatment 
  

   of 
  these 
  topics 
  should 
  make 
  the 
  book 
  a 
  popular 
  one 
  with 
  the 
  class 
  of 
  

   readers 
  it 
  is 
  designed 
  to 
  reach. 
  

  

  Minor 
  I«(otices. 
  

  

  _ 
  ^v 
  THE 
  American 
  student 
  of 
  lichens, 
  at 
  least, 
  the 
  issuing 
  of 
  a 
  synop- 
  

   sis 
  of 
  the 
  difficult 
  genus 
  Arthonia 
  by 
  Mr. 
  Henry 
  Willey 
  will 
  be 
  gladl.v 
  

   received. 
  He 
  enumerates 
  348 
  species, 
  a 
  half 
  dozen 
  or 
  more 
  of 
  which 
  are 
  

   new 
  ones. 
  He 
  also 
  excludes 
  more 
  than 
  30 
  species 
  which 
  have 
  been 
  

   wrongly 
  referred 
  to 
  the 
  genus. 
  There 
  are 
  quite 
  a 
  number 
  of 
  Cuban 
  

   specimens 
  which 
  he 
  proposes 
  as 
  new 
  but 
  does 
  not 
  name. 
  The 
  reason 
  ns- 
  

   signea 
  IS 
  the 
  fragmentary 
  material, 
  and 
  that 
  Dr. 
  Muller 
  has 
  had 
  the 
  same 
  

   CO 
  lections 
  and 
  has 
  possibly 
  named 
  them 
  already. 
  Mr. 
  Willey 
  has 
  dealt 
  

   with 
  the 
  ^vnonomy 
  as 
  fully 
  as 
  could 
  be 
  done 
  without 
  studying 
  the 
  her- 
  

   oam 
  of 
  Europe. 
  His 
  arrangement 
  of 
  species 
  is 
  an 
  artificial 
  one, 
  but 
  

   ^iiU 
  the 
  key 
  ,t 
  will 
  afford 
  great 
  assistance 
  in 
  determining 
  the 
  specie^'- 
  

   for 
  11.5^''^''' 
  ''^'' 
  be 
  obtained 
  from 
  the 
  author, 
  at 
  New 
  Bedford, 
  M««9" 
  

  

  dm^^JJ'?:^''!:^'''^^' 
  carefully 
  studied 
  a 
  number 
  of 
  lichens 
  inc*| 
  

   an? 
  f 
  . 
  "" 
  '^' 
  Collemacea. 
  with 
  a 
  view 
  to 
  determining 
  whether 
  »» 
  

   rTi 
  int 
  '"^"f'^r*^ 
  '-^''^'™« 
  «f 
  *^ypta3 
  exist 
  in 
  the 
  fruit, 
  the 
  onegiviD« 
  

   !l!1^2J!!i!fL^!li^^^^^ 
  the 
  paraphyses, 
  and 
  whether 
  any 
  form 
  of 
  

  

  P^oS^U^^KS,,^^-e. 
  .. 
  ^_ 
  

  

  53 
  illust., 
  12mo. 
  London: 
  

  

  