INDEX 



Absorption by roots, 173 



Agar-agar, 322 



Agaricus campestris, 78 



Ailanthus, buds, 216 



Air, influence on growth, 185 



Air-pores, 101, 120, 139, 243 



Alcoholic fermentation, 35-37, 319 



Alfalfa, 27, 317 



Algae, 32, 39, 312; brown, 49, 50, 



51; green, 48, 49; of water sup- 

 plies, 49; red, 49, 50, 52 

 Aloes, 244, 299 

 Amanita muscaria, 81 

 Amanita panthcrina, 80 

 Amanita phalloides, 81 

 Amanita verna, 80 

 Amaryllis family, 299 

 Angiosperms, 132, 137, 153, 312; 



families of, 295-311 

 Annual plants, 10, 137, 156, 220, 329 

 Annual rings, 117, 209, 210 

 Antherids of fern, 103, 104; of 



moss, 86, 88, 89 

 Antherozoids, of fern, 104, 105 ; 



of moss, 89, 90 

 Anthracnose of bean, 388 

 Anthrax, 26, 29 



Anthurium andreanum, flower, 261 

 Antitoxin, diphtheria, 24 

 Apple, crown gall, 376; fire blight, 



374, 375; flower, 259; fruit, 284; 



rust, 70-72 

 Arbor vitas, 187 

 Archegones, of fern, 103, 104, . 105 ; 



of moss, 88, 89; of pine, 124, 



126, 127 



Armillaria mellea, 79 

 Arum family, 298 



Asexual generation, of fern, 105-108 ; 

 of moss, 86, 90, 91, 93, 107; of 

 pine, 113, 127, 128, 130, 131 



Asexual reproduction, 57 



Asparagus, 203 



Asparagus rust, 72 



Attachment of plants by roots, 174 



Autumn colors of leaves, 256 



Bacillus, of anthrax, 26; of Asiatic 

 cholera, 16, 17 ; of chicken cholera, 

 16; of lockjaw, 18, 21, 26; of 

 splenic fever, 16; of typhoid fever, 

 21,25 



Bacillus subtilis, 11-15 



Bacteria, 11-29, 34, 38, 53, 373~377 



Bacterium, of diphtheria, 21, 24; 

 of tuberculosis, 21, 22-24, 2 9 



Bamboos, 196 



Banana family, 300 



Banyan trees, 175 



Barberry, rust, 60-63 



Bark, 118, 171, 213 



Barley, root, 170; root hairs, 170, 

 173; rusts, 69 



Basswood, stem, 209 



Bast, 115, 116, 117, 138, 209 



Bast fibers, 207, 211 



Bean, anthracnose, 388; blight, 

 377; stem, 187 



Beans, 137-155 



Beech family, 301 



Begonia, vegetative multiplication, 

 171 



Beverages, 318 



Biennial plants, 176, 220, 330 



Birch bark, 215 



451 



