6 CONTENTS. 
Timber estimating—Continued. 
Contents of standing trees—Continued. 
Volume tables: 22-23. 23) ys Se) eee 
By diameter only 2: --.. 22. 20522 eee 
By diameter and standard log length...............- 
By diameter and tree classes: . 2222-2. 22 seen 
by diameterand heivht...--.2.22 22. eee 
Factors that affect the accuracy of estimates...........- 
Determination oi the contents of stands..-.............-- 
Cavering the whole area... 250 3522s eee 
Hatimate by the eye. ....- 355.3. ees 
Estimate by inspection of each tree................- 
| A method of cruising a “forty’’ by small squares. .... 
H Asnethod used in open: woeds!_*..--2 22-2 i= se , 
Coverime only part of the area:_. 2 2-2 22-2 ae 
A method used in the Lake States.............-.-.. 
SIEMMAUTVEYA . <5... 5) Rose eee eee See 
Disinibation of atrip surveys... .- 2 
Preparation of a iorest Weape — 22s ee 
Measurement of the trees... <. 2... 2 ee 
Recordme measurements. . =... 2.222 eae 
Number of strip surveys required.-.......--..----- 
Computation. of resulis:2: 320-22 See 
Estimate by countme logs:-.2 >. 5 2 ee ee 
| Systematic plot method 2< 22. 42532 ee 
A method used on the Pacific Coast. -......--..--- 
Scattered or arbitrary plots. 2... 2: 225-22 
| Advantage of strip surveys.....- ee reer es ot 
ijse of heights im estimating... 2-222... 2. Se 
A method used in Southern yellow pine -...---.--.-- 
Accurate plot surveys._-=. =: 5.2245. = ee 
The choice of methods for estimating. .............. 
PW OH (TCCS 222 2 es coe See ee ee 
Sasseter STowUt.. —. 2 sk) oo ee eee 
Height growth. .....- ee ene eS 
Volume Srowtht: : ~)....° Ujeede 2.2422 eee eee 
Hintire volume. >. so Ps. 6 a2 a8 ia eee eee 
Table giving approximate growth per cent. --....-.-..- 
Board ioot volume -... -.- 2.0. 4 eee 
