94 AN AUSTRALIAN STUDY OF AMERICAN FORESTRY. 
Value of wood. (Properties, comparative values.) 
Causes of injury. Fire, insects, fungi, mistletoe, smelter fumes, weather, 
animals, &c. (Control under protection.) 
Increment. Yield table or other data, or the method used to determine 
increment. Effect of thinnings on growth, dc. 
TimBER OPERATIONS. 
Markets. Consumption and demand, local and general, past, present, 
and future. Relation to surrounding forests if any. Cut, by years, sales, and 
free use. (For use in the determination of working circle boundaries and in 
regulation.) 
Prices. (To aid in stumpage appraisals.) 
Methods and utilisation. (Methods in relation to preservation of proper 
silvicultural conditions, also as a basis for costs. Reasonable possibilities in 
utilisation.) 
Costs. (As a basis for stumpage appraisals.) 
Objects of management. Watershed protection, species of timber and 
classes of material, sustained annual or periodical yield, &c. (State specifically 
in order of importance the objects which materially affect the provisions of 
the plan.) 
Silvicultural systems and their application. or each type. (Concise 
descriptions of the systems adopted and provisions for their specific application. 
Include brush disposal.) 
Regulation of yield. Rotation, cutting cycles, &c. (Rotation of maximum 
volume production. Cutting cycles as short as practical considerations will 
allow.) 
Division of the forest into necessary divisions (working circles), areas 
within which sustained yield, annual or periodic, is now or will ultimately be 
desirable, based upon markets, transportation, and topography. (This may be 
done elsewhere in cases where such action will simplify treatment.) Blocks 
and chances only when they are actually needed to assist in regulation. (Blocks 
—main logging units or groups of logging units. Chances—single logging 
units or the subdivision of blocks necessary to carry out the management.) 
Annual or periodic cut. The limitation of cut including sales and free 
use. Accurately for ten years, and approximately for the periods of the rota- 
tion. (Include in the plan only the essential features of the method used, and 
cover necessary details in the appendix. Blank table for tabulation of limita- 
tion and amounts actually cut. Sales and free use.) 
Sales. (By divisions, if advisable.) 
Policy. Restriction and encouragement, and location. (The plan of 
cutting and specific application to actual conditions of the preceding con- 
clusions and of the service policy and regulations. Past management to be 
treated only as it will help in an understanding of that proposed.) 
Stumpage appraisals. Maximum and minimum rates. 
Administration and other features. Special force needed. Costs. 
(Summary for use in obtaining total forest expenditures in Section VII.) 
Free Use. (Principles applying specifically the general free use policy, 
especially where it is more or less vague and general. By divisions, ‘if 
advisable.) 
