REFERENCES 333 



BUREAU OF ANIMAL INDUSTRY, U. S. DEPARTMENT OF AGRICULTURE 



Maintenance Rations for Farm Animals. Bui. No. 143 



Records of Dairy Cows, Their Value and Importance in Economic Milk Pro- 

 duction. Cir. No. 103 



A Plan for a Small Dairy House. Cir. No. 195 

 Extra Cost of Producing Clean Milk. Cir. No. 170 

 Stomach Worms in Sheep. Cir. No. 102 



STATE AGRICULTURAL EXPERIMENT STATIONS, AND DEPARTMENTS 

 OF AGRICULTURE 



The Roots of Plants. Bui. No. 127. Manhattan, Kan.: State Agricultural 

 Experiment Station 



Soil Moisture and Tillage for Corn. Bui. No. 181. Urbana, 111.: State Ag- 

 ricultural Experiment Station 



Barnyard Manure. Bui. No. 246. Wooster, Ohio: State Agricultural Ex- 

 periment Station 



Potassium from the Soil. Bui. No. 182. Urbana, 111.: State Agricultural 

 Experiment Station 



Production and Care of Barnyard Manure. Bui. No. 210. Harrisburg, Pa.: 

 State Department of Agriculture 



Ground Limestone for Acid Soils. Cir. no. Urbana, 111.: State Agricultural 

 Experiment Station 



Raw Phosphate Rock as a Fertilizer. Bui. 305. Wooster, Ohio: State Agri- 

 cultural Experiment Station 



Maintenance of Soil Fertility. Bui. No. 336. Wooster, Ohio: State Agri- 

 cultural Experiment Station 



Some Fundamental Principles in Fertility Maintenance. Bui. No. 210. Harris- 

 burg, Pa.: State Department of Agriculture 



Illinois System of Permanent Fertility. Cir. 167. Urbana, 111.: State Agri- 

 cultural Experiment Station 



The Silo and Its Use. Bui. No. 133. Columbia, Mo.: State Agricultural 

 Experiment Station 



Filling Silos. Cir. No. 53. Manhattan, Kan.: State Agricultural Experiment 

 Station 



