﻿INDEX 
  TO 
  AMERICAN 
  BOTANICAL 
  LITERATURE 
  

  

  1916-1920 
  

  

  The 
  aim 
  of 
  this 
  Index 
  Is 
  to 
  include 
  all 
  current 
  botanical 
  literature 
  written 
  bj 
  

   Americans, 
  published 
  in 
  America, 
  or 
  based 
  upon 
  American 
  material 
  ; 
  the 
  word 
  Amer- 
  

   ica 
  being 
  used 
  in 
  the 
  broadest 
  sense. 
  

  

  Reviews, 
  and 
  papers 
  that 
  relate 
  exclusively 
  to 
  forestry, 
  agriculture, 
  horticulture, 
  

   manufactured 
  products 
  of 
  vegetable 
  origin, 
  or 
  laboratory 
  methods 
  are 
  not 
  included, 
  and 
  

   no 
  attempt 
  is 
  made 
  to 
  index 
  the 
  literature 
  of 
  bacteriology. 
  An 
  occasional 
  exception 
  is 
  

   made 
  in 
  favor 
  of 
  some 
  paper 
  appearing 
  in 
  an 
  American 
  periodical 
  which 
  is 
  devoted 
  

   wholly 
  to 
  botany. 
  Reprints 
  are 
  not 
  mentioned 
  unless 
  they 
  differ 
  from 
  ths 
  original 
  in 
  

   some 
  important 
  particular. 
  If 
  users 
  of 
  the 
  Index 
  will 
  call 
  the 
  attention 
  of 
  the 
  editor 
  

   to 
  errors 
  or 
  omissions, 
  their 
  kindness 
  will 
  be 
  appreciated. 
  

  

  This 
  Index 
  is 
  reprinted 
  monthly 
  on 
  cards, 
  and 
  furni'-hed 
  in 
  this 
  form 
  to 
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  cents 
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  Selections 
  of 
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  are 
  not 
  permitted 
  ; 
  each 
  

   subscriber 
  must 
  take 
  all 
  cards 
  published 
  during 
  the 
  term 
  of 
  his 
  subscription. 
  Corre- 
  

   spondence 
  relating 
  to 
  the 
  card 
  issue 
  should 
  be 
  addressed 
  to 
  the 
  Treasurer 
  of 
  the 
  Torrey 
  

   Botanical 
  Club. 
  

  

  ■ 
  

  

  Albrecht, 
  W. 
  A. 
  Symbiotic 
  nitrogen 
  fixation 
  as 
  influenced 
  by 
  the 
  

   nitrogen 
  in 
  the 
  soil. 
  Soil 
  ScL 
  9: 
  275-319. 
  pi. 
  1-4 
  +/, 
  /-j. 
  My 
  

   1920. 
  

  

  Alway, 
  F. 
  J. 
  Agricultural 
  value 
  and 
  reclamation 
  of 
  Minnesota 
  peat 
  

  

  soils. 
  Minnesota 
  Agric, 
  Exp. 
  Sta. 
  Bull. 
  188. 
  1-136. 
  /. 
  1-S4. 
  M 
  

   1920. 
  

  

  Amargos, 
  J. 
  L. 
  La 
  mejor 
  variedad 
  de 
  Tabaco 
  del 
  mundo. 
  Revista 
  

   Agric. 
  16: 
  69-73. 
  30 
  Je 
  1920. 
  

  

  Andrews, 
  H. 
  Garden 
  flowers 
  from 
  the 
  Rocky 
  Mountains. 
  Gard. 
  

   Mag. 
  31: 
  308-310. 
  Jl 
  1920. 
  [Illust.] 
  

  

  Antevs, 
  E. 
  Die 
  Jahresringe 
  der 
  Holzgewachse 
  und 
  die 
  Bedeutung 
  

   derselben 
  als 
  klimatischer 
  Indikaton 
  Progr. 
  Rei 
  Bot. 
  5: 
  285-386. 
  

   /. 
  I. 
  1917-^ 
  

  

  Artschwager, 
  E. 
  F. 
  On 
  the 
  anatomy 
  of 
  Chenopodium 
  album 
  L. 
  Am. 
  

  

  J 
  

  

  /. 
  /-J. 
  29 
  Jl 
  1920. 
  

  

  Bailey, 
  I. 
  W, 
  The 
  formation 
  of 
  the 
  cell 
  plate 
  in 
  the 
  cambium 
  of 
  the 
  

   higher 
  plants. 
  Proc. 
  Nat. 
  Acad. 
  Sci, 
  6: 
  197-200. 
  Ap 
  1920. 
  

  

  [Illust.] 
  

  

  Bailey, 
  L. 
  H. 
  A 
  collection 
  of 
  plants 
  in 
  China. 
  Gent. 
  Herb, 
  i: 
  I-49. 
  

  

  31 
  Jl 
  1920. 
  

  

  20 
  new 
  species 
  in 
  various 
  families. 
  

  

  481 
  

  

  