in which tho raw food is rrorked up into the proper form for 

 nutrition and storage, it oan readily bo seen that such a 

 serious loss of foliage must be followod by a severe lesson- 

 ing of the food supply of tho troe and a consequent decrease 

 in the rate of groTrth. Sections from a western yellow pine 

 pole infected with a noodle fungus on the Trinity illustrated 

 this to a nicety. Tho tree had boon suffering for the last 

 seven years. During the seven years previous to tho at tacit 

 of the noodle fungus, a growth in increment of approximately 

 .85 inches in diameter was made while for the seven years 

 during which the treo was diseased the growth vras only .3 

 inches. ,/hen such a disease is provp.lent in a largo stand 

 the actual loss of increment each year will be considerable. 



Now you aro doubtless beginning to ask, What oan 

 be done about this? A start has been made in the intro- 

 duction of the Forest Sanitation Clause rvhich was first In- 

 corporated into a timber sr.le contract on the Sierra National 

 Forest in the latter part of 151C. The clause has been 

 modified since that time until it now reads as follows: 



"In order to check tho spread of forest tree dis- 

 eases and to eliminate from the forest snags and doad trees 

 which are a menace in tine of fire, we agree tr cut all 

 trees marked for cutting and all snags or dead trees upon 

 tho cutting area whether merchantable or apparently unmer- 

 chantable. 



Trees felled under the above clause shall be opened 

 up sufficiently to satisfy the Forest Officer in charge of 

 their condition and any portion of euoh trees which r>re mer- 

 chantable in the Judgment of the ^orest Officer shall be re- 

 moved from tho roods, scaled, and pr.id for." 



This clause makes it possible for tho Forest Of- 

 ficer marking a timber sale to remove all diseased trees down 

 to a certain diameter limit, anc. old snags, thus leaving the 

 cutting area in a fairly healthy, sanitary condition when the 

 sale is completed. Old snags, besides being a serious fire 

 menace, are veritable brooding places for vood destroying 

 fungi anc. insects and Should be removed under all circum- 

 stances. This stipulation in the contract makes it possible 

 so cut out all diseased trees even If they c'o not yield one 

 log. Such trees are a constant menace to the future stand 

 and should be removed. 



