LSJJE.X 



369 



Field observations and records, 4, 5 



Filariasis, 253 



Filth-disease fly, 107 



Filth-disease infections, 107, 110 



Fire blight, 212 



Fish hatchery made from tumbler. 

 303 



Fish hawk, 45 



Fish ponds on farms, 296 



Fishes, 39, 306, 317; classification 

 and species, 304 ; economic and 

 civic value, 310 ; enemies of mos- 

 quitoes, 131 ; habits and spawning 

 seasons, 308 ; problems of fish and 

 fishing, 295-311 



Fishes Day, 299 



Flat-headed apple-tree borer, 165 



Flatworms, 255, 260 



Flea, 182, 236, 240 ; burrowing 

 (chigoe), 155 ; cat, 154 ; dog, 154 ; 

 hen, 155 ; rat, 154 



Flea beetle, 166 



Flesh flies, 112 



Flicker, 46 



Flies, 107-122, 152, 153, 182, 242, 245, 

 261, 268, 332 ; blood-sucking, 259 ; 

 blowfly, 154, 318 ; bluebottles, 112, 

 154 ; botflies, 113, 157 ; campaigns 

 against, 110, 111, 117, 118, 120, 

 122; cluster fly, 154; fecundity 

 of, 117 ; fruit fly, 154 ; greenbottle, 

 112, 154; hibernation of, 117; 

 hornfly, 113, 121, 157 ; kinds, 111, 

 112, 113, 118, 154, 318; life his- 

 tory of, 116 ; nets for catching, 

 119; relation of, to disposal of 

 waste, 114, 115 ; screens for, futil- 

 ity of, 110 ; stable, 108, 109 ; traps 

 for outdoors, 115, 118 ; tsetse, 230 ; 

 work of, 107, 1 10 



Flood plane, 56 



Floods, cause of and damage from, 

 65, 56 



Flowering beau, 86 



Flowering quince, 97 



Flowers in relation to landscaping, 

 86 



Flukes, 260 



Flycatchers, 47 



Fomites, 237, 238 



Food, law of absorption, 189, 190 



Foot-and-mouth disease, 110, 233, 256 



Forest fires, causes of, 61, 64 ; dam- 

 age from, 55, 62, 64; laws 

 regulating, 66; relation of, to 

 tree-planting, 65 



Forest preserves, 171 



Forestry, annual growth of trees, 55 ; 

 consumption of wood, 55; effects 

 of adequate planting, 57, 58; 

 natural enemies of trees, 156; 

 study of local problems of, 58 ; 

 study of trees and civic viewpoint, 

 54-66 



Formalin, as germicide, 249 ; use of, 

 to prevent potato blight, 216 



Formicary, 145 



Foul brood, 233 



Fowl cholera, 110, 233 



Fowl tuberculosis, 110 



Fox sparrow, 49 



Foxglove, 78 



Foxtail, 70 



Fresh-water mussel, 273, 279, 281 



Fringed gentian, 67 



Frog, 39, 306, 313, 314, 315, 317, 

 318, 320; possibilities of culture, 

 318 



Fruit fly, 154 



Fungi, 73, 97, 186-191; bacteria, 

 general treatment of, 218-251 ; 

 fungous and bacterial diseases of 

 plants, 207-217; molds and mil- 

 dews, 197-199; mushrooms, poi- 

 sonous and edible, 200-206 ; yeasts, 

 191-197 



