﻿INDEX 
  

  

  (References 
  to 
  illustrations 
  are 
  indicated 
  hy 
  asterisks 
  accompanying 
  page 
  num- 
  

   bers. 
  When 
  an 
  asterisk 
  precedes 
  the 
  citation 
  of 
  a 
  group 
  of 
  pages, 
  it 
  means 
  that 
  

   several 
  illustrations 
  are 
  included) 
  

  

  Absorption 
  of 
  carbon 
  dioxide, 
  13, 
  14 
  

  

  Absorption 
  of 
  water 
  by 
  roots, 
  9, 
  

   23-25 
  

  

  Accessory 
  buds, 
  95*, 
  90* 
  

  

  Acer 
  saccharum, 
  309, 
  310* 
  

  

  Actinomorphic, 
  129 
  

  

  Adventitious 
  buds, 
  90, 
  98* 
  

  

  Aerial 
  roots, 
  30*, 
  31*, 
  73* 
  

  

  Agriculture, 
  197, 
  308-332. 
  See 
  also 
  

   topics 
  such 
  as 
  Plant 
  Breeding, 
  172- 
  

   193 
  ; 
  Fungous 
  Diseases 
  of 
  Plants, 
  

   234-201 
  ; 
  and 
  Weeds, 
  333-342 
  

  

  Air, 
  relation 
  to 
  germination, 
  161 
  

  

  Air 
  chamber, 
  30* 
  

  

  Air 
  passages, 
  85* 
  

  

  Air 
  plants, 
  31, 
  48, 
  49*, 
  50 
  

  

  Air 
  roots, 
  30*, 
  31, 
  73* 
  

  

  Air 
  supply 
  of 
  roots, 
  20*, 
  27, 
  28, 
  321 
  

  

  Akene, 
  167*, 
  304 
  

  

  Albuminous 
  substances. 
  See 
  Proteins 
  

  

  Alfalfa, 
  nitrogen 
  production 
  by, 
  205 
  

  

  Algse-fungi, 
  *235-242, 
  261 
  

  

  Algse, 
  *2 
  19-233 
  

  

  Algae, 
  classification 
  of, 
  260, 
  261 
  

  

  Alga?, 
  and 
  water 
  supply, 
  229, 
  230 
  

  

  Alternate 
  branches, 
  96* 
  

  

  Alternate 
  leaves, 
  70*, 
  71 
  

  

  Alternation 
  of 
  generations, 
  266 
  

  

  Amanita, 
  258* 
  

  

  Ament. 
  See 
  Catkin 
  

  

  Anchorage, 
  8*, 
  9, 
  25 
  

  

  Angiosperm, 
  life 
  history 
  of, 
  *208-304 
  

  

  Angiosperm 
  flower, 
  14*, 
  15*, 
  *125- 
  

   154, 
  *298-302 
  

  

  Angiosperms, 
  282, 
  *296-307 
  

  

  Animal 
  food, 
  plant 
  sources 
  of, 
  7, 
  40, 
  

   47 
  

  

  Annual 
  ring, 
  12*, 
  05*, 
  66 
  

  

  Annual 
  thickening, 
  12*, 
  65*, 
  66, 
  67 
  

  

  Annuals, 
  12, 
  44 
  

  

  Anther. 
  128*, 
  129* 
  

  

  Antheridium, 
  264, 
  265*, 
  209*, 
  275* 
  

  

  Anthrax, 
  203 
  

  

  Antipodal 
  cells, 
  136*, 
  301* 
  

  

  Antitoxins, 
  212, 
  213 
  

  

  Apetalous, 
  127* 
  

  

  Apple, 
  branch 
  arrangement 
  of, 
  96* 
  

  

  Apple, 
  leaf 
  arrangement 
  of, 
  70* 
  

  

  Apples, 
  191*, 
  315-319 
  

  

  Aquatic 
  plants, 
  78*, 
  79*, 
  85*, 
  219 
  

  

  Arbor 
  vitte, 
  293* 
  

  

  Archegonium, 
  264, 
  *265, 
  *269, 
  *275 
  

  

  Aristolochia 
  stem, 
  cross 
  section 
  of, 
  

  

  62*, 
  63 
  

  

  Arrangement 
  of 
  leaves, 
  *70~73 
  

   Arum," 
  pollination 
  of, 
  147*, 
  148 
  

   Ascocarp, 
  244*, 
  245 
  

   Ascomycetes, 
  *243-247, 
  261 
  

   Ascophyllum, 
  230 
  

   Ascospores, 
  244*, 
  245 
  

   Ascus, 
  244* 
  

  

  Asexual 
  reproduction, 
  225 
  

   Asparagus 
  rust, 
  254 
  

   Assimilation, 
  46 
  

   Atriclmm, 
  263*, 
  265* 
  

   Axillary 
  bud, 
  95*, 
  96* 
  

  

  Bacteria, 
  39, 
  * 
  199-2 
  18 
  

   Bacteria, 
  classification 
  of, 
  260 
  

   Bacteriology, 
  197 
  

   Bark, 
  10, 
  11, 
  12*, 
  20, 
  65*, 
  105* 
  

   Basidiomycetes, 
  *251-260 
  

   Bast, 
  hard, 
  20, 
  62*, 
  64* 
  

   Bast, 
  soft 
  (sieve 
  tubes), 
  20*, 
  43, 
  63* 
  

   Bean 
  seed, 
  158* 
  

   Beefwood, 
  56* 
  

   Bees, 
  140*, 
  150* 
  

   Berries, 
  157 
  

   Biennial, 
  12, 
  44, 
  73, 
  74 
  

   Big 
  tree, 
  287*, 
  294, 
  296 
  

   Bilaterally 
  symmetrical 
  flowers, 
  128*, 
  

   129 
  

  

  369 
  

  

  