6 DEPARTMENT OF AGRICULTURE BUI.S. 1101-1125. 



Department Bulletin No. 1111 — One-variety Gottok Communities — Con. page. 



Meade cotton communities 32 



Durango cotton communities 49 



Acala cotton communities 44 



Community utilization of Lone Star cotton 45 



Conclusions 46 



List of publications on community cotton improvement 49 



Department Bulletin No. 1112. — The Western Yellow Pine Mistle- 

 toe — Effect on Growth and Suggestions for Control: 



Introduction 1 



Physical and climatic features of the region 2 



The western yellov/ pine mistletoe 3 



Effect of mistletoe on growth of host 4 



Effect on longevity of host 22 



Effect of mistletoe on merchantability of timber 25 



Effect of mistletoe on seed production of host 25 



Sil vicultm-al aspect of mistletoe infection 29 



Control of mistletoe 30 



Summary 34 



Department Bulletin No. 1113. — Development of Cooperative Shelter- 

 belt Demonstrations of the Northern Great Plains: 



Introduction 1 



The plan of cooperation 1 



Ai'ea covered by shelter-belt demonstrations 3 



Topography 3 



Soils .^ 5 



Climate . . . .' 5 



Notes on tree species -. 6 



Trees in relation to soil types 14 



Shelter-belt planting plans 15 



Demonstration plantings 17 



Growth study of cooperative shelter belts planted in 1916 24 



Experimental plantings 25 



Summarjr and conclusions 26 



Department Bulletin No. 1114. — The Detection of Hypochlorites and 

 Chloramins in Milk and Cream: 



Outline of experimental work 1 



Preparation of reagents 2 



The test 2 



Reaction in milk 2 



Reaction in Pasteurized milk 4 



Reaction in cream 4 



Summary 5 



Department Bulletin No. 1115. — Chemical Changes in Calcium Arse- 

 nate During Storage: 



Purpose of investigation 1 



Results of prcAQous investigations 2 



Results of present investigation 3 



Discussion 23 



Summary : . . . 27 



Department Bulletin No. 1116. — Seedling Blight and Stackburn of 

 Rice and the Hot- water Seed Treatment: 



Introduction 1 



Factors favoring the development of this disease 2 



Causes of injury 3 



Seed treatment 6 



Conclusions 10 



Department Bulletin No. 1117. — Natural Control op the Citrus Mealy- 

 bug IN Florida: 



Introduction 1 



Citrus conditions in Florida 1 



Insect enemies of the mealybug, and insects associated with the mealybugs 



and sometimes considered as beneficial 3 



The fungous parasite Entomophthora fumosa, n. sp 4 



Description 6 



Microscopic characters , 6 



