Q2 NO TES ON FORES TR Y. 



promise of the outcome, it is frequently advisable 

 to complete the clearing of such block or blocks, 

 and provide for re-stocking it at once. Its place 

 in the next rotation would probably have to be 

 altered, and the loss in outcome be spread over 

 the rest of the rotation by a rateable reduction of 

 felling in each block. 



If natural reproduction is relied on, we cannot 

 then effect a clean sweep of one block per annum, 

 but must begin by thinning out the older blocks 

 in that gradual manner prescribed in the chapter 

 on natural reproduction ; but after we have got as 

 many years into the rotation as are allowed from 

 the first thinning to foster germination to the 

 final clearing, we have always one block to be 

 finally cleared annually one block in which we 

 make the first thinning, and another or others in 

 which we make the second and intermediate thin- 

 nings, to admit light and foster the growth of the 

 young crop. 



This necessitates felling operations being spread 

 over a large area ; and, as a general rule, when 

 felling by rotation of area is the system, artificial 

 planting is resorted to for reproduction. 



On this system trees have only to struggle with 

 those of their own age; they lead each other up 

 tall and straight ; periodical thinnings afford the 

 necessary space for lateral development; and the 



