FORESTRY LESSONS ON HOME WOODLANDS 



33 



South Dakota, Forest Supervisor, Custer. 



Tennessee, State Geological Survey, Nashville. 



Texas, Agricultural and Mechanical College, College Station. 



Vermont, Department of Agriculture, Montpelier. 



Virginia, State Forester, University. 



Washington, State Board of Forest Commissioners, Olympia. 



West Virginia, Forest, Game, and Fish Department, Philippi. 



Wisconsin, State Conservation Commission, Madison. 



DOYLE RULE FOR SCALING LOGS » 



Diameter of log 



(small end, 



inside bark) 



LENGTH OF LOO IN FEET 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



BOARD FEET 



20 



Inches 



6 



7 



8 



9 



10 



11__ 



12 



13 



14 



15 



16_ — 



17 



18 



19 



20 



21 



22 



23 



24 



25 



26 



27 



28 



29__. 



30 



31 



32 



33 



34 



35 



36 



37 



38 



39 



40 



1 



2 



2 



2 



2 



3 



3 



3 



3 



4 



4 



4 



4 



5 



3 



4 



4 



5 



5 



6 



7 



8 



8 



9 



9 



10 



10 



11 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



9 



11 



12 



14 



16 



17 



19 



20 



22 



23 



25 



27 



28 



30 



13 



16 



18 



20 



22 



25 



27 



29 



31 



34 



36 



38 



40 



43 



18 



21 



24 



28 



31 



34 



37 



40 



43 



46 



49 



52 



55 



58 



24 



28 



32 



36 



40 



44 



48 



52 



56 



60 



64 



68 



72 



76 



30 



35 



40 



46 



51 



56 



61 



66 



71 



76 



81 



86 



91 



96 



37 



44 



50 



56 



62 



69 



75 



81 



87 



94 



100 



106 



112 



119 



45 



53 



60 



68 



76 



83 



91 



98 



106 



113 



121 



129 



136 



144 



54 



63 



72 



81 



90 



99 



108 



117 



135 



144 



144 



162 



162 



171 



63 



74 



84 



95 



106 



116 



127 



137 



148 



158 



169 



180 



190 



201 



73 



86 



98 



110 



122 



133 



147 



159 



171 



184 



196 



208 



220 



233 



84 



98 



112 



127 



141 



155 



169 



183 



197 



211 



225 



239 



253 



267 



96 



112 



128 



144 



160 



176 



192 



208 



224 



240 



256 



272 



288 



304 



108 



126 



144 



163 



181 



199 



217 



235 



253 



271 



289 



307 



325 



343 



121 



142 



162 



182 



202 



223 



243 



263 



283 



304 



324 



344 



364 



385 



135 



158 



180 



203 



226 



248 



271 



293 



316 



338 



361 



384 



406 



429 



150 



175 



200 



225 



250 



275 



300 



325 



350 



375 



400 



425 



450 



475 



165 



193 



220 



248 



276 



303 



331 



358 



386 



413 



441 



469 



496 



524 



181 



212 



242 



272 



302 



333 



363 



393 



423 



454 



484 



514 



544 



575 



198 



231 



264 



298 



331 



364 



397 



430 



463 



496 



529 



562 



595 



628 



216 



252 



288 



324 



360 



396 



432 



468 



504 



540 



576 



612 



648 



684 



234 



273 



312 



352 



391 



430 



469 



508 



547 



586 



625 



664 



702 



742 



253 



296 



338 



380 



422 



465 



507 



549 



591 



644 



676 



718 



760 



803 



273 



319 



364 



410 



456 



501 



547 



592 



638 



683 



729 



775 



820 



866 



294 



343 



392 



441 



490 



539 



588 



637 



686 



735 



784 



833 



882 



931 



315 



368 



420 



473 



526 



578 



631 



683 



736 



788 



841 



894 



946 



999 



337 



394 



450 



506 



562 



619 



675 



731 



787 



844 



900 



956 



1,012 



1,069 



360 



420 



480 



541 



601 



661 



721 



781 



841 



901 



961 



1,021 



1,081 



1,141 



384 



448 



512 



576 



640 



704 



768 



832 



896 



960 



1,024 



1,088 



1,152 



1,216 



408 



476 



544 



613 



681 



749 



817 



885 



953 



1,021 



1,089 



1,157 



1,225 



1,293 



433 



506 



578 



650 



722 



795 



867 



939 



1,011 



1,084 



1,156 



1,228 



1,300 



1,373 



459 



536 



612 



689 



766 



842 



919 



995 



1,072 



1,148 



1,225 



1,302 



1,378 



1,455 



486 



567 



648 



729 



810 



891 



972 



1,053 



1,134 



1,215 



1,296 



1,377 



1,458 



1,539 



5 

 11 

 20 



31 

 45 



61 

 80 

 101 

 125 

 151 



180 

 211 



245 

 281 

 320 



361 

 405 

 451 

 500 

 551 



605 

 661 

 720 

 781 

 845 



911 



980 



1,051 



1,125 



1,201 



1,280 

 1,361 

 1,445 

 1,531 

 1,620 



1 For information regarding the advisability of using different log scales see U. S. Dept. Agr., Farmers' 

 Bui. 1210. 



To find the number of board feet in a log without using the above table 

 according to the Doyle rule: Deduct 4 inches from the diameter of the smaller 

 end, square one-fourth the remainder, and multiply the product by the length 

 in feet. 



KEY TO COMMON KINDS OF TREES 1 



The following key is intended only as a guide in the identification of the more 

 common kinds of trees. It is based on prominent, distinctive characteristics 

 which can be readily observed by those who have no special training in botany. 

 Most of the terms used require no explanation. 



i This key and the following tree descriptions are by William H. Lamb, formerly Scientific Assistant in 

 Dendrology, Forest Service. 



