

256 



INDEX 



Selected List (Continued). Pepper Tree, 67 



Pin Oak, 46 



Red Maple, 59 



Red Oak, 45 



Scarlet Oak, 47 



Silver Maple, 61 



Sugar Maple, 60 



Sweet Gum, 56 



Sycamore, 53 



The Conifers, 65 



Tulip Tree, 55 



Valley Oak, 49 



White Oak, 47 



White Ash, 57 



Willow Oak, 48 

 Shade tree's struggle for existence, 183 

 Shagbark Hickory, 105 

 Shakespeare Memorial Oak, 125 

 Shears, Pruning, 147 

 Shellac for protecting wounds, 144 

 For waterproofing surfaces, 144 

 Shelter, Trees for, 93 

 Sherman Sequoia, General, 120 

 Sherrill labels capital's trees, Col., 129 

 Shoestrings are symptoms of root-rot, 175 

 Shrubs for roadsides, 93 

 Sidewalk planting, 69 

 Silver Maple, 61 

 Slime-flux, Description and treatment of, 



Smoke injures trees, 169 



Soap spray, Fish-oil, 191 



So-called "Tree Surgeons," 156 



Sodium arsenite, 191 



Soft-coal smoke injures trees, 169 



Soil cultivation at base of trees, 133 



For newly planted tree, 81 



How to enrich, 133, 196 



Requirements for proper tree growth, 



133 



Shade trees planted in cultivated, 233 



Treatment of gas-filled, 168 



Requirements of Beech, 106 

 Sources of injury to street trees, 149 

 Southern roads, Trees suitable for, 92 

 Spacing distances in planting, 74 

 Spacing of roadside trees, 93 

 Spiny elm caterpillar, 202, 218 

 Spot, Leaf, 180 

 Sprayers, Power, 193 

 Spraying accessories, 194 

 Spraying apparatus, Community owner- 

 ship of, 185 



Various kinds of, 192 

 Spraying mature street trees, 193 



To control foliage fungus, 177 

 Spray pumps, Uses of various types, 193 

 Sprays, Contact, 188 



Lime sulphur, 189 



Sprays, Kerosene emulsion, 189 



Creosote oil, 190 



Miscible oils, 190 



Nicotine sulphate, 191 



Fish-oil soap, 191 



Poisoned contact, 191 



Carbon disulphid, 191 



Sodium arsenite, 191 

 Square-foot basal measurement method, 



235 

 Square-inch basal area method, 236 

 Stag-head or top-dry, How to treat, 182 

 State entomologists, 184 

 State laws penalizing tree damage, 233 

 Sterilization of cavities, 162 

 Sterilizing wounds, 145 

 Stomach poisons, Formula for, 188 

 Street in shade tree valuation, Effect of, 



232 

 Street tree location, 68 

 Street tree planting, Two row type, 68 



Center and side planting, 71 



The center strip, 72 



The potted type, 73 



The informal type, 73 



Center and side planting, 71 

 Street trees, Abuses, 134 



Proper location of, 68 



Spraying mature, 193 



Underground irrigation of, 132 

 Streets, Trees for wide and narrow, 42 

 Sucking insects, Sap, 197 

 Sugar maple, 32, 60 



Borer, 212 

 Suits, Verdicts in tree damage, 234 

 Sulphate, Nicotine, 191 

 Sulphur bleaching dangerous to trees, 170 

 Sulphur spray, Lime, 189 

 Sun-scald, 155 

 Surgical work on trees, 157 

 Sweet Gum, 56 

 Sycamore, 53 



California, 55 



For roadside planting, 92 



Identifying characters, 34 



Lace bug, 221 



Principal insects which attack: bag- 

 worm, 221; White-marked Tussock 

 moth, 221; lace-bug, 221 



Various names, 34 



Maple, 34 



Table, Tree planting, 88 

 Taxes, Nut trees pay, 99 

 Temperature, How trees affect, 21 

 Tent caterpillar, Forest, 203 

 Terrapin scale, 214 

 Title of shade tree executive, 229 

 Toadstools, 173 



