INDEX 



249 



Populus deltoides, 51 



— grandidentata, 54 



— nigra, 51, 128 



— tremuloides, 54 

 Pores in wood, 227 



— small or indistinct, 230 



— varying in size, 230 



Poster for private woodlands, 215 

 Precautions against fire, 214 

 Protection against fungi and 



insects, 19G 

 Pruning forest trees, 1G6 



— lawn trees, 166 



— shade trees, 166 

 — , tools used in, 166 

 — , too severe, 163 



— trees, fundamental principles, 



160 



time for, 162 



Pussy willow, 59 



Quaking aspen, 54 



Quality of trees, how to judge, 129 



Quality of wood, how to judge, 



233 

 Quercus alba, 72 



— palustris, 79, 119, 125 



— platanoides, 74 



— rubra, 76, 124, 126 



— velutina, 75 



Red cedar, 225 



— — and arbor-vitse, description 



of, 19 



— gum, 95, 231 



— horsechestnut, 34 



— juniper, 22 



— maple, 41, 120, 125 



— mulberry, 105 



— oak, 76, 124, 126 



— pine, 11, 126 



— or black oaks, 226 



— or sweet gum, 231 



Red spider, 13 

 Redwood, 226 

 Removal of dead and broken 



branches, 162 

 ■ — of trees, how to mark, 212 

 Requirements of trees, 110 

 Retinospora obtusa, 123 

 Rliytisma acerinum, 41 

 Ring-porous woods, 221, 226 

 Robinia jjseudacacia, 100, 126 

 Rock maple, 38 

 Roots, 110 



— , development of, 110 

 — , protection of, from drying, 130 

 Rust, apple, 22 



(Safeguarding forests, 179 



Salix babylonica, 58 



Salix discolor, 59 



Saperda vestita, 98 



Sap-wood, 106 



Sawfly, 27 



Scale, cottony-maple, 39 



— , oyster-shell, 53 



Scale-like leaves, 19 



Scarlet oak, 76 



Sciadojntys verticillata, 123 



Scolytus quadrispinosus, 85 



Scotch pine, 9, 11 



Screening trees, 128 



Season, influence of, 116 



Seasons for spraying trees, 137 



Seedling trees, planting forests 



with, 189 

 Shade trees, pruning, 163 

 Shagbark hickory, 83 

 Shellbark hickory, 85 

 Silver maple, 38 



— poplar, 53 

 Soft maple, 40 



— pines, 224 



" Softwoods " or conifers, 224 

 Soil erosion, forests prevent, 187 

 — , influence of, on trees. 112 



