COPPICE WOODS. 219 



to modifications amongst themselves, so that they cannot 

 easily be separated the one from the other; hence they are 

 best thrown together. The important point in that case is, 

 that the middle-aged classes are of the proper size. The 

 allotment may then be represented as follows : 



T-\-S 



Or again 



C V = - x n 



IV 



Example. As above, A = 1050 ; r=100; s = 5; ?i 



=~ X 20 = 200 



C F +C,+(7 / +C /7 -^(xl05-40) = 650 



Total . . . 1050 



c. Coppice Woods. 



As the rotation of coppice woods is short, it is usually 

 possible to mark the annual coupes on the ground, so that 

 grouping in age classes is not necessary. If the latter should, 

 nevertheless, be considered desirable, generally not more than 

 five gradations are thrown together, so that C/ comprises the 

 1 to 5-years-old gradations, C n those from 6 to 10 } r ears, etc. 



