THE THEORY AND PRACTICE OF WORKING PLANS 



125 



Method No. 12 is excellently suited for irregular and over- 

 mature selection forests. 



Method No. 13 is restricted to very intensive conditions. 



Method No. 14, variations I and III, for coppice and coppice 

 with standards, Var. II for intensive conditions. Chiefly used 

 as area check. 



Method No. 15, for even-aged stands of only moderate 

 regularity. 



Diagram E 



DETERMINATION OF CUT BY 18 DIFFERENT METHODS 

 BASED ON THE SAME PREMISES 



7,500 



g 6,500 



.5,000; 



Method Number 2 



Simple form onl;' 



9, 10 n 18ri3'ul4'"Uu"fl5Y'15Yi'-18 

 Morrill 



Method No. i6, the ultima ratio of fairly regular, even-aged 

 stands. 



Method No. 17, the strait-laced period method of Europe; 

 not adapted to American conditions. 



Method No. 18, an American adaptation of the period 

 method for even-aged stands and those uneven-aged by groups 

 of even age. 



It is always advisable to calculate the annual cut by a 

 variety of methods so as to have a check on the figures. Both 



