INDEX. 109 



Page. 

 Insect depredations in North American forests, reduction in Nation's wealth 



thereby 71 



enemies of Oyllene robinias 35 



Dendroctonus brevicomis 27 



Monohammus tilillator 53-54 



injuries to forest products 64-67 



prevention 79-84 



natural and artificial tree reproduction 67 



prevention 79 



North American forest products, general estimates of amount. . 92-93 



reduction in value of fin- 

 ished and commercial prod- 

 ucts thereby 71 



summary and estimates as to 



character and extent 69-71 



wood of djdng and dead trees 62-64 



prevention 78-79 



living trees 60-62 



prevention 78 



killed timber as fuel for fires 68 



durability 69 



Insects cause the death of trees 58-60 



destruction by forest fires 68-69 



diseases in their control 86 



estimated loss of standing timber killed and damaged thereby 70-71 



forest (sec aho Insects injurious to forest and forest products). 



and forest fires, interrelations ^ 67-69 



fungi, interrelation 69 



control by utilization of natural enemies and factors 85-87 



present conditions and opportunities 88-89 



damage, general estimates 92-93 



injury followed by decay 69 



to fire-killed timber 68 



in their relation to the reduction of future supplies of timber 67 



investigations, results 88 



losses therefrom compared with losses from forest fires 67-68 



prevention, summary 93-95 



results of investigations 88 



utilization of waste caused thereby 87 



injurious to forests. (See Insects, forest.) 



and forest products, control by utilization of natural 



enemies and factors. . 85-87 



general principles 72-73 



methods. ; 71-91 



damage, general estimates of 



amount 92-93 



damage, summary and esti- 

 mates as to character and 



extent 69-71 



information, acquired and 



new 88-89 



disseminated 89 



prevention of losses 71-91 



