INDEX 



351 



Slash, disposal of, 25, 29, 49, 116, 210, 



disposal of, protects against fire, 261 



disposal of, to control fungi, 278 



hardwood, 216 



light burning, 227 



lopping of, 22s, 230 



methods of disposal, 220 



piling and burning of, 221, 229, 232, 



234 



piling of, 220, 230 



pulling the tops, 226 



rotted by fungi, 277 



selecting the method of disposal, 232 



silvicultural effects of, 215 

 Slash pine, 58 

 Snow, damage by, 279 

 Snowslides, 41, 56, 77, 102 

 Society of American Foresters, i, 154 

 Soil, effect of grazing upon, 285 



injury by fires, 247 



injury by light burning, 227 



slash in relation to, 216, 232 



treatment of, 26, 30, 50, 57, 63, 116 

 Southern pines, 42 

 Spacing, 20, 199 



Special methods of thinning, 183 

 Sprout method, iii 

 Sprout reproduction, 119 

 Sprouting ability, 113, 115 

 Spruce, Norway, 41 



red, 80, 184 

 Squirrels, protection against, 294 

 Stagheadedness, 279, 280 

 Standard crown classes, 155 

 Standard reproduction methods, 11, 



IS, 16, 142 

 Standards, 127, 132, 134, X38 

 Stands, evenaged, 25, 45, 98, 104, 143, 

 178 



life history of evenaged, 159 



location of, 31 



minimum size of, 13 



Stands, natural development of, 153 

 protection of, 6 



treatment of, during period of re- 

 generation, s, II 

 treatment of, during that period of 

 rotation not included in period 

 of regeneration, 6, 26 

 two-storied, 45 



unevenaged, 83, 91, 105, 143, 178, 

 213 

 State Forests of Connecticut, 259 

 State Forests of France, 124 

 Strips, clearcutting in alternate, 32 

 irregular, 37 

 progressive, 32, 35 

 selection, 98 

 shelterwood, 66, 68, 69 

 Struggle for existence, 133, 158, 178, 



194 

 Stumps, low, 114 

 Simscald, injury from, 196 

 Suppressed trees, 156, 162, 172, 17s, 



177 

 Surface fires, 250 

 Sustained annual yield, 90 

 Switzerland, 106 

 System, silvicultural, 11 



Terminology, forest, i, 299 

 Thinning, 134, 142, 143, 144, 153, 192 



advantages of, 156 



amount removed in, 163, 175, 182 



application of, 185 



assists in securing reproduction, 34 



Borggreve's method of, 162, 177, 

 188 



French method of, 162, 172, 188 



German method of, 162, 188 



grades of, 162 



in plantations, 189 



increases yield, 157 



interval between, 186 



keeps the stand healthy, 159 



