The Hlvicultnrnl MMCIH which will be used in management am! tin- 

 possibility of using cupped trees for other purposes, such as saw 

 timber, must be kept in mind in designating the trees to be cupped. 



All contracts will require the use by purchasers of one of tin- 

 modern cupping systems, with horizontal apron or gutter, and the 

 placing of cups and aprons or gutters as near the ground as possible. 

 in such a manner as to prevent waste. All contracts should specify 

 the minimum diameters d. b. h. which will be cupped, the period 

 within which cups must be placed, the number of cups to be placed 

 upon trees of specified diameters, which will be based upon the 

 maximum production in the long run consistent with reasonable 

 operating costs; an average and maximum depth for streaks, which 

 should not exceed one-half and three-fourths inches, respectively, not 

 including bark ; a maximum width for streaks, which should, if pos- 

 sible, be one-half inch or less: and a total height for faces during a 

 contract season; the kind of hack that will be used for chipping, 

 proper placing, and spacing of faces on the tree, based upon the maxi- 

 mum production in the long run, the frequency of streaking, and the 

 maximum number of streaks which may be made during the season. 

 Wherever necessary for safety, all contracts should require the 

 Protection from removal annually of all debris to a reasonably safe 

 ***' distance from each tree and the construction of fire- 



breaks around the contract area. 



HENRY S. GRAVES, 



Forester. 



[No. 147] 



o 



