INDEX 



281 



Spacing in plantations, 74 

 Spools, 179 

 Spruce, bud worm, in 

 Spruce-destroying beetle, 109 

 Spruce, nitrogen consumption, 7 

 Spruce, Norway, silvicultural character- 

 istics, 29 

 Spruce, red, silvicultural characteristics, 



27 

 and balsam fir, comparative growth 



in height and diameter, 260 

 uses, 178, 179, 180, 181, 183, 186 

 volume in board feet by New Hamp- 

 shire rule, 251 

 volume in board feet, 252 

 volume in cords, 253 

 volume in cubic feet on entire stem, 



including bark, 253 

 volume of unpeeled pulpwood in cubic 



feet, 254 

 yield per acre for pure even-aged 



stands, 274, 275 

 Squirrels, 100 



Stacked cubic feet in logs of given di- 

 mensions, 216 

 Stand, 8 

 age, 196 



growth, 195, 196 

 mixed, n 

 pure, ii 

 Sycamore, uses, 181 



Tallying trees, 162 



Tamarack, silvicultural characteristics, 



33 



uses, 181, 183 

 Tanning bark, 185, 187 

 Temperature, average, i 

 Thinnings, 77, 82 



French method, 87 



grades, 85 



increased growth after, 5, 89 



Ties, 181, 187 

 Timber estimating, 161 

 Tolerant, 5, 9 

 Tools for fire fighting, 152 

 Top lopping, 146 

 Transpiration, 3, 4 

 Tulip tree, see white wood 

 Two-storied, 16 

 Types, forest, 8 



permanent, 10 



temporary, 10 



Underplanting, 13 

 Uneven-aged, 15, 49, 198 

 Utilization of forest products, 175 



Valuation survey, 167 

 Value of standing timber, 170 

 Vehicles, 180 

 Veneer, 177 

 Vermont log rule, 210 

 Virgin forest, 13, 15, 49 

 Volume growth, 193, 197 

 Volume tables, 163, 217 



Water table, 4 



Weeks' bill, 145 



White-heart rot, 131 



White pine blight, 134 



White pine blister rust, see under white 

 pine 



White pine weevil, 104 



White wood, silvicultural characteris- 

 tics, 47 

 uses, 1 80 



Windfall, 52, 58 



Wind shake, 32 



Yellow poplar, see whitewood 



Yield in cords for 3 types and qualities 



of soil, Conn., 268 

 Yield tables, 197 



