INDEX 



245 



Cypress, bald, 30 



— knees, 31, 117 



— , obtuse leaf, Japanese, 123 



Dead and broken branches, re- 

 moval of, 162 



Deciduous trees, 119 



Destroying injurious insects, 

 methods of, 134 



— pupse, 141 



Developing disease, moisture a 



factor in, 112 

 Diaporthe parasitica, 82 

 Diffuse-porous woods, 221, 230 

 Disease, fungi as factors of, 15.5 

 — , moisture a factor in develop- 

 ing, 112 

 Dogwood, flowering, 104, 122 

 Douglas fir, 224 



Effect of heat on trees, 116 



Elk wood, 100 



Elm, 229 



— , American, 47, 50, 119, 126 



— , Camperdown, 50 



— , cork, 95 



— , English, 50 



— leaf beetle, 49, 141 



— , poplar, gingko and willow trees, 

 told by their form, 46 



— , white, 50 



Enemies of trees, 239 



Enemv of trees, forest fires as an 

 241 



English elm, 50 



— hawthorn, 128 



— yew, 123 

 European beech, 69 



— larch, 25, 122, 126 



— linden, 98, 119 



■ — weeping birch, 121 



— white birch, 68, 120 



Fall webworm, 148 



Fagus, 128 



— americana, 68 



— sylvatica, 69/120 

 Fern, maidenhair, 55 



Fighting forest fires, various ways 



of, 194 

 Filling cavities, manner of, 172 

 Fire, guarding woodlands from, 



193, 213, 215 

 Flowering dogwood, 104, 122 

 Foliage, spraying, 141 

 Forest fires as an enemy of trees, 



241 

 , various ways of fighting, 



194 



— lands, exemption from taxa- 



tion, 216 

 — , life and nature of, 182 



— trees, pruning, 166 

 Forestry in various countries, 198 

 — , what it is and what it does, 179 

 Forests, grazing cattle in, a 



source of injui-y, 196 

 Forest Service, tl. S., 200 

 — , harvesting, 196 

 — , harvesting of, to increase 



]iroduction, 180 

 — , how established, 190 

 — , how harvested, 197 

 — , how protected, 193 

 — , how they help to regulate 



streams and prevent floods, 



187 

 — , method of establishing, 191 

 — , planting, with seedling trees, 



189 



— prevent soil erosion, 187 



— , protecting from destructive 



agencies, 193 

 — , safeguarding, 179 

 — , utilization of by-products, 198 

 Fraxinus americana, 35, 126 



— nigra, 35 



Frost, effect of, on trees, 116 



