352 



INDEX 



Thinning, lengthen rotation by use of, 

 182 

 makes stand more resistant, 158 

 marking for, 208 

 methods of making, 160 

 ordinary method of, 162, 176 

 quahty improved by, 157, 182 

 shorten rotation by use of, 156, 175 

 special methods of, 183 

 time to start, 159, 176, 183 

 to protect against insects, 270 

 to protect against tree diseases, 



277 

 yield from, 163, 170 



Top lopping, 225, 230 



Torch for burning slash, 222 



Toumey, J. W., 19 



Trametes pini, 47 



Tree diseases, classification of, 276 

 methods of control and prevention, 



277 

 other than those produced by fungi, 



279 

 protection against, 274 



Tubeuf, K. F., 276 



Tuhptree, 138 



Two-storied form, 45, 54 



Underbrush, disposal of, 26, 29, 49, 



116 

 Understory, 54, 172 

 Unevenaged, 83, 91, 103, 105, 108 



143. 213 

 Uniform method, 66 

 U. S. Forest Ser\ace, 54, 96, 208, 209, 



254, 268 



Vegetation, undesirable, 29, 172 

 Virgin forests, 16, 83, 107 

 Virgin timber, method of cutting, 42, 

 76, 81, 100 



Wagner, 70 



Wagner's border cutting, 70 



Waste in logging, control of, 211 



Weeding, 142 



Weeds, removal of, 49 



Weir, J. R., 276 



Western larch, 55 



white pine, 210, 274, 275 



white pine tj^e, 55, 209 



yellow pine, 48, 80, 81 

 Weyl, L. H., 285 

 White ash, 138 



fir, 274 



oak, 138 



pine, 9, 57, 80, 145, 149, 154, 163, 

 177, 199, 202, 246, 288 

 blister rust, 277, 278 

 weevil, 269 

 Willow, basket, 125 

 Wimmenauer, 169 



Wind, danger of uprooting or break- 

 ing by, 35, 46, 57, 78, 92, 137, 

 188 



direction in relation to location of 

 cuttings, 28, 280 



effect on fires, 258 



fimgi, as cause of losses from, 277 



necessity of clearcutting to avoid 

 loss from, 40 



protection against, 68, 103, 158, 196 



value of groups in resisting, 51 

 Wind River Experiment Station, 47 

 Woodward, K., 288 

 Wolf trees, 142, 150 

 Woolsey, T. S., Jr., 205 



YeUow poplar, 95 



Yield, sustained annual, go 



Zon, R., 113 

 Zoology, 6 



noramr UBRAnr 



N. C State College 



