CONTENTS. 5 



DEPARflTMENT BULLETIN No. 709. — ^RepORTS OF STORAGE HOLDINGS OF 



Certain Feed Products: Page. 



Introduction 1 



Cold-storage reports of commercial organizations 4 



Storage reports of the Bureau of Markets: 



Beginning and growth of the work 7 



Methods of securing information 8 



Cold-storage definitions 10 



Compiling the reports 10 



Distribution of information 12 



Review of the 1916-17 cold-storage season for apples 14 



Review of the 1916-17 cold-storage season for butter 17 



Review of the 1916-17 cold-storage season for American cheese 20 



Review of the 1916-17 cold-storage season for eggs 22 



Review of the 1917 storage holdings of frozen and cured meats and lard — 25 



Storage holdings of fish, December 15, 1917 43 



Selected list of publications on commercial holdings 43 



Department Bulletin No. 710. — Stagger Grass (Chrosperma Musc«- 

 toxicum) as a Poisonous Plant: 



Description and characteristics 1 



Historical summary 4 



Experimental feeding of the plant 5 



Typical cases 6 



General conclusions: 



Toxic dose 11 



Symptoms 12 



Poison cumulative 13 



Animals susceptible 13 



Remedial measures 13 



Summary • 14 



Literature cited 15 



^Department Bulletin No. 711. — Logging in the Douglas Fir Region: 



Object of the Bulletin : 1 



The region 2 



Logging in general 4 



Felling and bucking 30 



Primary log transportation. 56 



Loading 154 



Railroad transportation 175 



Railroad inclines 217 



Unloading 225 



Water transportation 238 



General expenses 248 



Total cost of logging at one operation 252 



Department Bulletin No. 712.— Apple Powdery Mildew and Its Control 

 IN the Arid Regions op the Pacific Northwest: 



Economic importance of powdery mildew 1 



Review of the literature 2 



The causal organism. 4 



Dissemination of the fungus 5 



Description of the disease 6 



Susceptibility of varieties 7 



Importance of the disease in the Pacific Northwest 7 



Spray injury 9 



Orchard spraying experiments 10 



liijury to fruit and foliage 20 



Spray materials 21 



Summary of control measiu-es 23 



Dormant sprays 23 



Pruning experiments 24 



General notes on the control of the disease 25 



Concljisions ■. 26 



Literature cited 28 



