THINNING. 



181 



off six branches when the work can be done with the 

 knife, than one which is so large as to require the 

 saw ; and, in the common mode of pruning, they 

 are generally all of this last size. If there be any 

 difference, then, in the labour, and, consequently, in 

 the expense of the two systems, it is, that the one I 

 have proposed has that difference in its favour. 

 These remarks are applicable to thinning as well as 

 to pruning. 



