vi INTRODUCTORY 



Part Nine consists of the following- bulletins published by the 

 Iowa State College of Agriculture and Mechanic Arts : "The 

 Use of Lime on Iowa Soils" ; "Test Your Clover and Timothy 

 Seed"; "Injury From White Grubs in Iowa"; "Some Common 

 Poultry Diseases"; "Spraying Tree Fruits"; "Selecting Good 

 Laying Hens for Egg Production" ; "Soiling Crops for Milk Pro- 

 duction" and "Canning by the Cold Pack Method." 



Part Ten is a reprint of the annual report of the Iowa Weather 

 and Crop Service Bureau. It contains a summary and monthly 

 review of the climatology for the year ; a review of the crop con- 

 ditions, by months ; a tabulated crop summary showing produc- 

 tion and value of Iowa's farm crops and a tabulation giving aver- 

 age yields and total production of the principal farm crops by 

 counties. 



Part Eleven consists of six tables containing the farm and crop 

 statistics by counties, collected by the township assessors and 

 reported to the Department of Agriculture by the County Audi- 

 tors. With the co-operation of the Director of the Iowa Weather 

 and Crop Service Bureau the assessor's books were verified and 

 numerous errors in addition, carrying amounts forward, etc., 

 were corrected. The statistics contained in these tables are pre- 

 sented by the department and represent a correct tabulation of 

 the returns made by the township assessors after all apparent 

 errors were corrected. 



Part Twelve contains a series of tables showing the average 

 yield, total production and total value of the principal farm crops 

 for a period of twenty-three years. For reference work there is 

 presented crop and live stock statistics reprinted from the 1918 

 year book of the United States Department of Agriculture. These 

 statistics are presented by states for the United States and by 

 countries for the world. 



