SECTION V— THE CONSTRUCTION OF VOLUME TABLES 



Explanation. — The problems in this section have been chosen with reference 

 to illustrating a number of fundamental problems which may serve as a 

 basis for all volume table studies. Each problem illustrates some one or 

 more specific features. These are emphasized in each instance in the ital- 

 icized portions of the titles. 



The relation of the specific features to related problems are brought out 

 by special questions. 



Caution. — In the problems of this section the student should use special care 

 to label all work completely. The co-ordinate axes should be labeled with 

 the unit being used, as ''Volume in cubic feet"; and each completed curve 

 and table should contain all the information necessary to give it scientific 

 accuracy. Substantial reductions in grade will be made for any work turned 

 in that is not properly and completely labeled. 



The following points should be considered in the title of a completed 

 volume table, though not all need be included, because some one condition 

 may be wholly obvious from some others already stated : 



1. Kind of table. 



2. Species. 



3. Forest type. 



4. Locality. 



5. Number of trees upon which table is based. 



6. Top diameter-limit used. 



7. Date. 



PROBLEM 16. (Office.) The Construction of a Merchantable Volume 

 Table in Board Feet Based on D.B.H. Only. 



Directions. 



A. Method. — Averaging the values first and then plotting the averaged points. 



B. Data Required. — The student should determine first just what field 

 measurements are necessary for the construction of a volume table of this 

 kind. (See Problem G.) Before beginning the work he should ask the 

 instructor whether his conclusions on the j^oint arc right. Use Data 

 Series I or the data collected in Problem 6. In case the latter are used 

 the field work of the entire class should be used by each student. 



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