THE THEORY AND PRACTICE OF WORKING PLANS 153 



A. Prussian Outline 



Introduction. — Working period (two decades). Revision 

 (every decade). Name of forest organizer and assistants. 



1. Letter of minister (secretary) putting plan into effect. 



2. Plan of management. 



Digest of working-plan conference. 

 Introduction. Time and scope of work. 

 General position and history of the forest. 

 The measurements. 

 a. Maps. 



(i) Special maps (large scale). 



(2) Location map (small scale). 



(3) Map of servitudes. 



h. Record of measurements. 



(4) Boundaries. 



(5) Table of measurements (survey notes). 



(6) Record of changes in area. 



(7) Record of changes in servitude. 

 Division of area. 



(8) Ranger districts and blocks. 



(9) Compartments. 



(10) Subcompartments. 

 Condition of stand. 



(11) Site. 



(a) Exposure. 

 [h) Soil. 



(12) Stand. 



(a) Species. 



{h) Distribution of the age classes. 



(13) Injuries, 

 (a) Fire. 



(6) Storm (wind), 

 (c) Frost. 

 \d) Drought. 



