CONTENTS. 7 



Department Bulletin No. 790. — Range Management on the National 



Forests. Page. 



Introduction 1 



Determination of class of stock to which range is best suited 3 



Grazing periods 10 



Grazing capacity 16 



Management of cattle on the range 30 



Management of sheep on the range 48 



Stock driveways , 55 



Range reseeding 56 



Grazing and protection of timber, watersheds, game, and recreational use . . 66 



Range reconnaissance and range inspection 74 



Poisonous iDlants ." 82 



Forage plants: Collection, identification, and notes 88 



Suggestions for the collection of range plant specimens on National Forests . 91 

 Publications relating to National Forest range plant studies (arranged 



chronologically) 96 



Department Bulletin No. 791. — Plant Succession in Relation to Range 

 Management. 



The problem 1 



Succession or the development of vegetation 2 



The plant types 7 



The wheat-grass consociation 8 



The porcupine-grass-yellow-brush consociation 22 



The foxglove-sweet-sage-yarrow consociation 32 



The ruderal-early-weed consociation 44 



The effect of grazing on plant succession 54 



Destructive grazing and its relation to erosion 54 



Forage production on driveways and bed grounds. 55 



Succession on moderately depleted range grazed annually prior to seed 

 maturity compared with succession on similar range protected 



yearlong 61 



Judicious grazing 64 



Summarjf of the effect of grazing on plant succession on the range 65 



General summary 66 



Indicators and their use 73 



Application of plant succession to range management 73 



List of publications relating to plant succession, page 4, of cover. 



Department Bulletin No. 792. — Reports of Storage Holdings of Cer- 

 tain Food Products During 1918. 



Introduction 1 



Re^dew of the 1918 cold-storage holdings of frozen meats 4 



Review of the ] 918 storage holdings of cured meats and lard 15 



Re\dew of the 1918 cold-storage holdings of frozen fish 27 



Review of the 1918 storage holdings of cured herring and mild cured salmon. 76 



Department Bulletin No. 793. — Lead Poisoning in Waterfowl. 



Introduction 1 



History 2 



Species of birds affected 3 



Symptoms of lead poisoning 3 



Post-mortem appearance 5 



Results of experimental work 7 



Prevalence of shot in marsh areas 9 



Conclusions 10 



Department Bulletin No. 794. — Waterfowl and Their Food Plants in 

 THE Sandhill Region of Nebraska. 



General introduction 1 



Part I. — Waterfowl in Nebraska: 



Introduction 3 



Effect of Federal protective laws 3 



Future of waterfowl in the sandhill region 4 



Natural enemies 6 



Hunting grounds 8 



Waterfowl hunting in the autumn of 1915 8 



