2J2 



INDEX 



Harding Plants Memorial Trees, no 



Harmony essential in street planting, 68 



Hawthorns for roadside planting, 94 



Health factors, Shade trees as, 21 



Heart-rot, Red and white, 174 



Hickory, Characteristics, range and adap 

 tability of Shagbark, 105 

 Principal insects which attack: Walnut 

 caterpillar, 209; Gipsy moth, 209; 

 Hickory bark beetle, 209; twig gir- 

 dler, 210; gall aphis, 210 



Highway planting, 115 

 On Lincoln, Illinois, 118 



Hilgard Chestnut, The, 125 



Historic trees, Famous, 122 



Honey Locust, 67 



Principal insects which attack: white- 

 marked Tussock moth, 210; Twig- 

 girdler, 210 



Hooker Oak, Sir Joseph, 123 



Horse-bites, Injury from, 134 



Horse chestnut, 30, 64 



Principal insects which attack: White- 

 marked Tussock moth, 210; Leopard 

 moth, 210; Oyster-shell scale, 210 



Horse chestnut and Buckeye, Differenti 

 ating characters between, 30 



How fungus lives and grows, 173 



How to choose nursery stock, 77 



How to detect gas leaks, 167 



How to fill cavities, 162 



How to identify shade trees, 27 



How to prune, 146 



Huntington Elm, 51 



Identify Shade Trees, How to, 27 

 Illuminating gas menaces shade trees, 



1 66 

 Importance of central control in shade 



tree work, 226 

 Influence of street in shade tree valuation, 



232 



Informal type of street planting, 73 

 Injury to street trees, Sources of, 149 



From industrial wastes, 170 



From freezing, 154 



From overhead wires, 150 

 Insect attacks, Anticipating, 225 

 Insect pests, Municipal treatment of, 185 

 Insecticides, Contact, 187 

 Insects and Mites, Gall, 215 

 Insects and their control, 183 

 Insects, boring, 197 



Leaf-chewing, 198 



Sap-sucking, 197 



Various types, 186 

 Inspection of trees, Necessity of regular, 



184 

 Intrinsic value of shade trees, 25 



Investment, Shaae trees an, 24 



Tree planting an, 239 

 Irrigating shade trees, Methods of, 132 

 Irrigation and drainage of street trees, 84 



Japanese Walnut for roadside planting, 105 

 Judicial computation of damage to shade 

 trees, 234 



Kentucky, Naturalization Tree in, 121 

 Kermes, Pubescent oak, 217 

 Knot, Black, 176 



Kerosene emulsion spray, Uses of, 189 

 Formula for, 190 



Labelling shade trees, 127 

 Necessity of, 130 



Labels, Methods of attaching tree, 124 

 Types of, 128 



Lace Bug, Sycamore, 221 



Lafayette Trees, 123 



Landscape value of trees in supplement 

 ing memorials, 108 



Large Elm sawfly, 205, 218 



Laurel Oak, 48 



Law, Shade trees and the, 240 



Lawns, Shade trees planted on, 233 



Laws penalizing tree damage, State, 233 



Laws _ protect groves and orchards in 

 California, 97 



Lead, Arsenate of, 188 



Leaf blight, Effect of, 180 

 How to prevent, 180 

 When to spray for, 180 



Leaf chewing insects, Work of, 187 

 How to control, 198 



Leaf curl, How to control, 181 



Leaf Scorch, How to control, 182 



Leaks, Gas, 166 



Legal regulation of tree operators, 157 



Legal value of shade trees, 231 



Legislation, Shade tree, 240 



Leopard Moth, 206, 212, 216 



Liberty Oak, 124 



Limbs, Bolting, 159 



Lime, Arsenate of, 188 



Lime-Sulphur Sprays, Uses of, 189 



Lincoln Hackberry, The, 123 



Lincoln Highway Association planting, 

 117 

 Lincoln Trees, 123 



Linden, American (or Bass wood), 40, 52 

 Borer, 210 

 European, 40, 53 



Live Oak, 47 



Local conditions affect local tree legisla 

 tion, How, 245 



Local cooperation in shade tree work, 245 



Locating roadside trees properly, 94 



