364 



CIVIC BIOLOGY 



Apanteles, enemies of, 140 



Aphids, 51, 142, 162, 156 



Apoplexy, 232 



Apparatus, 11 



Appendicitis, 234 



Apple, 94, 165 



Apple Day, 299 



Apple of Peru, 75 



Apple tree, blight of, 212, 213, 216 ; 



enemies of, 155, 156 

 Aquaria, 10, 315; cement for, 15; 



making of, 12-15 ; management 



of, 299-303 



Aquatic duck foods, 307 

 Arachnids, problems of spiders, 



mites, and ticks, 163-168 

 Arbor Day, 299 

 Arbor vitse, 59, 165 

 Army worm, 156, 317 

 Arsenate of soda, 71 

 Arsenic, poison for rats, 180 

 Artesian wells, 219 

 Asepsis, 248 

 Asiatic poppy, 73 

 Asparagus beetle, 156 

 Asters, 86 



Atlantic salmon, 309 

 Atlantic squid, 284 

 Australian duck-bill, 169 



Bacteria, 176, 214; blight or wilt 

 from, 215; control of bacterial 

 diseases, 231-251 ; culture of, 

 224-230 ; distribution and forms 

 of, 218; fungous and bacterial 

 diseases of plants, 207-217; gen- 

 eral discussion and treatment of, 

 186-191, 218-251 ; kinds of, 218, 

 220, 221, 234, 236, 242; labora- 

 tory methods and experiments, 

 224-230; parasitic, 187; pictures 

 of, 236; reproduction of, 220, 221; 

 saprophytic, 221; size of, 218; 



symbiotic, 187, 221 ; venomous 



forms of, 234 ; work of, 221 

 Bacterins, 248 

 Badger, 171 

 Bald cypress, 59 

 Bald eagle, 45 

 Balsam, 59 

 Baltimore oriole, 48 

 Banana, food for mosquitoes, 131 

 Bank swallows, 49 

 Banostine Belle de Kol, 103 

 Barium carbonate, 1 79 

 Bark disease, 247 

 Barn swallows, 49 

 Barnacles, 287 

 Basket willow, 307 

 Basses, 309 

 Basswood, 59, 82 

 Bats, 129, 169 

 Bean blight, 215 

 Bear corn, 76 

 Bears, 155, 169 

 Beaver, 171, 172, 261 

 Bedbug, 154, 236 

 Beech, 59 



Bees, 152, 153, 158 ; honeybee, 157 

 Beetles, 20, 21, 153-156, 317, 318 

 Belladonna, 73 

 Belted kingfisher, 4(5 

 Benzine, 165 

 Bindweed, 71 

 Biological library, 16, 17 ; using of, 



349-351 

 Biology, instruction and research in, 



346 



Birch, 59, 83, 84 

 Bird Day, 299 

 Bird fountain, 29 

 Birds, 22-53, 313, 317 ; adaptation of, 



to environment, 37 ; attracting, 



28, 31, 33; conservation of, 53; 



destruction of insects, 23, 24, 25 ; 



divisions of, 32 ; economic value 



