104 
CONCRETE SILOS 
In preparing data for this booklet, the Universal Information Bureau 
has investigated during the past three years, about five hundred concrete 
silos of various types located in different parts of the United States. 
Methods of silo construction and operation were carefully studied and 
data on the actual cost and labor required, and other important information 
were obtained. Valuable assistance was received from a number of sources, 
particularly from the bulletins of the Department of Agriculture and the 
State Experiment Stations, several paragraphs from which have been used 
verbatim. 
The reader seeking further information on the subject of silage and 
silo construction will find in the following pamphlets a comprehensive 
course of instruction : 
Cement Silos — Farmers' Bulletin No. 405, U. S. Department of Agri- 
culture. 
Silos and Silage — Farmers' Bulletin No. 32, U. S. Department of Agri- 
culture. 
Cost of Filling Silos — Farmers' Bulletin No. 292, U. S. Department of 
Agriculture. 
Concrete Silo Construction — Bulletin No. 214, University of Wisconsin, 
Madison, Wis. 
Cement Silos in Michigan — Bulletin No. 255, Michigan State Experiment 
Station, East Lansing, Michigan. 
Silage and the Construction of Modern Silos — Bulletin No. 83, Wisconsin 
Agricultural Experiment Station, Madison, Wisconsin. 
The Silo— Monthly Bulletin No. 2, Volume 6, Missouri State Board of 
Agriculture, Columbia, Missouri. 
The Reinforced Concrete Silo — Circular No. 49, by the Missouri Agri- 
cultural Experiment Station, Columbia, Mo. 
Concrete Silo Construction — Bulletin No. 6, Vol. IV, Kansas State Agri- 
cultural College, Manhattan, Kansas. 
Silos and Silage in Maryland — ^BuUetin No. 129, Maryland Agricultural 
Experiment Station, College Park, Maryland. 
The Silo and Silage in Indiana — Bulletin No. 40, Purdue Agricultural 
Experiment Station, LaFayette, Indiana. 
Soiling Crops, Silage and Roots — Bulletin No. 9, Series II, College of 
Agriculture, Cornell University, Ithaca, New York, 
"Modern Silage Methods," published by the Silver Manufacturing 
Company, of Salem, Ohio. 
Farmers' Bulletins published by the U. S. Department of Agriculture 
may be obtained by addressing J. A. Arnold, Editor and Chief Bureau of 
Publications — Department of Agriculture — Washington, D. C. 
