Index 



389 



Sambacus, Elderberry, 328, 336, 338, 



339, 366, 368-371 

 San Jose scale, 151 

 Sandy soil, trees suitable for, 372 

 Sap-lifters, 108 

 Sap-wood trees, 171 

 Saprophytes, 36, 41, 43 

 Saratoga, cost of spraying in, 141 

 Sargent, Prof. C. S., definition of 



tree adopted by, 209 

 Sascatoon Berry, Alniis, 275 

 Sassafras, 213. 316, 367, 372 

 Saunders, Dr. William, on tests of 



hardiness in trees, 200 

 Saw-flies, 48, 230; see also Insect 



pests 

 S.\XIFRAGACEAE, Stonebreak 



family, 352 

 Scale-insects, 134, 141, 150; see also 



Insect pests 

 Scheele's Green, 137 

 Scotch Broom, Cytisus, 346 

 Scotch Heather, Calluna, 331 

 Seashore planting, trees suitable for, 



242, 249, 284,- 317, 339, 341, 



343, 349, 356, 362, 371; also List, 



P-37I 

 Seasons, influence of, on disease, 



34 

 Seed, preserving characteristics of 



mother plant, 24; inheritance of 



adaptability, 34 

 Senecio, 37 



Sequoia, 210, 215, 222 

 Service-berry, 56 



Service-tree, Sorbus, 192, 263, 264 

 Sesias, 158 



Seventeen-year locust, see Cicada 

 Shadbush, Amelanchier, iii, 211, 



273, 369, 370, 372 



Shade, effect on weak trees, 25; 

 value of, 200; affected by soil 

 205, see also Light 



Shade-enduring trees, 215, 218, 232, 

 234, 264, 267, 276-278, 281, 284, 

 287, 288, 323, 330, 332, 337, 354, 

 359, 361; also List, p. 370 _ 



Shade trees, adverse conditions in 

 streets, 33; treatment of soil for, 

 77; reasons for pruning, 98; height 

 of crown from ground, loi 



Shagbark, Hicoria, 257 



Shapes of trees, see Types of trees 



Sheepberry, Viburnum, 340, 366 

 Shellbark, Hicoria, 256, 257 

 Shepherdia, Buffalo Berry, 328, 344. 



366, 368, 369, 372 

 Shoulder, 88 

 Shrubs, adaptability, 322; hardiness, 



323, 325; freedom from pests, 



323; grouping, 324; pruning, 325; 



classification, 326 

 Shrubs and trees, confusion between, 



208, 322 

 Siberian Crab-apple, 295 

 Siberian Pea Tree, Caragana, 210, 



252, 368, 370, 372 

 Silkworm, 158, 291 

 Silver Bell Tree, Halesia, 111,327, 



354, 369, 370 



Silver Tree, Elceagnus, 327, 341, 342. 

 366, 369 



Slacked lime, see Lime 



Smith, Prof. J. B., referred to, 149 



Smoke, cause of disease, 68; symp- 

 toms of poison by, 69; suppression 

 of nuisance, 70 



Smoke-resistant trees, 69; also List, 

 P- 370 



Smoke Tree, Rhus, 262 



Snout-beetles, 152 



Snow-pressure damage from, 31 



Snowball, Viburnum, 192, 324, 329, 

 336, 339-341, 366-373; Chinese, 

 340 



Snowdrop, Halesia, in, 327, 354, 

 369, 370 



Soap, Soft, 163 



Soap solution, 141, 142, 148, 150, 

 153, 154, 160; see also Insecticides 



Soil, relation to root system, 15, 

 16; respiration, 20; adaptation to 

 species, 24, 198; important factor 

 in city streets, ^^,; symptoms 

 of unfavorable conditions, 53; 

 changes in, 57, 58; physically 

 wet, physiologically dry, 61; 

 chemical constituents, 62, 79; 

 treatment of for shade and lawn 

 trees, 77; composition of versus 

 physical conditions, 198, 199; 

 needed depth, 199; for transplant- 

 ing, 172; influence on form, 204, 

 205; conditions for coniferous 

 trees, 214 



Soldiers' Home, Washmgton, 186 



