CONTENTS. 



Department Bulletin No. 613. — Digestibility of Certain Miscellaneous 



Animal Fats: Page. 



Introduction 1 



Methods of procedure 2 



Subjects 3 



Goat's butter 3 



Kid fat 6 



Hard-palate fat 8 



Horse fat • 10 



Oleo oil 12 



Oleo stearin 15 



Ox-marrow fat 17 



Ox-tail fat 19 



Turtle fat 22 



Summary 24 



Department Bulletin No. 614. — Cost op Producing Apples in Yakima Val- 

 ley, Wash.: 



Introduction 1 



Facts brought out 2 



The Yakima district 2 



History and development of the industry 4 



Method of presentation 8 



Farm organization 8 



Size of ranch 9 



Types of ranchers 10 



Investment 11 



Orchards 14 



Orchard maintenance 19 



Handling the crop 40 



Total labor cost 61 



Expenses other than labor : 65 



Total of all costs 72 



Department Bulletin No. 615. — The Economical Winter Feeding of 

 Beef Cows in the Corn Belt: 



The need for more economic feeding of breeding cows 1 



Breeding herds must get most of their living from farm by-products 2 



Avoid feeding excessive rations 4 



Avoid costly rations 6 



Use more cheap roughage 6 



Use available feeds most economically l 8 



Study of rations on selected farms 11 



Conclusions 15 



Department Bulletin No. 616. — The Citrus Thrips: 



Introduction 1 



History and distribution 2 



Nature and extent of injury 3 



Dissemination 7 



Food plants 8 



Life history and habits 10 



Seasonal history 22 



Natural checks 24 



Natural enemies 25 



Control experiments 29 



Bibliography 41 



Department Bulletin No. 617. — Australian Saltbush: 



Early tests of the Australian saltbush 1 



Description of the plant 2 



Distribution 3 



Climatic requirements 5 



Soil requirements 7 



Drought resistance 7 



Analyses of the plant 8 



Value for pasture 8 



Seeding on range lands 9 



Seeding under cultivation 9 



Harvesting for soiling 10 



Harvesting for seed 10 



