40 INDEX. 



Page. 



Dendrology, collection of specimens, field notes 38 



herbaria of forage plants 37 



identification of forage plants 38 



Service herbarium at Washington 37 



data on range of trees 36 



identification of species 36 



indefinite common names of frees 36 



Departmental cooperation *. 34 



Direct seeding. (See Sowing.) 

 Diseases. (See Tree diseases.) 

 District libraries. (See Libraries.) 



organization investigative work 25 



plan compiled annually from forest and nursery plans 16 



Division of Forest for purpose of technical management 6 



Entomology, Bureau of, cooperation with 29 



Experiments to determine methods of reforestation 14 



Experiment stations 28 



cooperation with other bureaus, private institutions, and 



individuals 28 



establishment of 28 



relation of officer in charge to supervisor and district 



forester 28 



subjects for study 28 



indirect influence of forests 29 



individual tree studies 28 



artificial reforestation 29 



stand studies 29 



Extension. (See Forest extension.) 

 Extracting seed. (See Seed collection.) 



Fencing for protection against rodenis 22 



Field notes on specimens collected 38 



Filing copies of preliminary and working-plan data 6 



Fire plan to be covered in forest plan 9 



Forage plants, identification of 38 



Forest extension 14 



direct seeding 14, 18 



general methods 



importance 14 



nurseries 20 



organization and scale 15 



plans and reports 16 



planting 14, 19 



policy 14 



protection against rodents 22 



reforestation problems, study of 29 



seed collecting 16 



selection of areas 15 



Forest investigations 25 



card records to be kept 31 



cut-over areas 27 



district organization 25 



experiment stations 28 



forest products investigations 31 



importance 25 



insect infestations 29 



kinds of investigative work 25 



points to be covered in studies conducted on all National 



Forests 26 



preliminary plans 25 



publication of results 31 



range improvement 29 



reports 31 



Service organization 25 



small forest experiments 28 



special silvical studies 29 



tree diseases 30 



