406 IOWA DEPARTMENT OP AGRICULTURE 



stone, brick, tile, cement and stave silos are all used with success. 

 In the northern section some trouble is experienced with freezing 

 but this can be largely eliminated by tight packing and insulation 

 of the walls. To facilitate close packing the walls must be straight 

 and smooth on the inside and free from shoulders or abutments 

 of any kind. The admission of air or the presence of air pockets 

 allow fermentation to take place, which spoils silage. 



The success of a silo depends first upon its strength and second 

 upon the durability of the material used in the construction. To be 

 durable any material must resist the action of the weather, the 

 constant wetting, drying, freezing and thawing which take place 

 both inside and outside the silo. During the summer the silo is gen- 

 erally empty and must be built exceptionally strong because of its 

 height in order to resist storms during this season. It is desirable 

 that the silo cost as little for repairs as possible and the one that 

 must be constantly adjusted for shrinkage and expansion is of less 

 value than the one that needs no such attention. The silo should 

 always have a roof which not only preserves the silage but braces 

 the walls at the top. 



ENCOURAGEMENT OF THE DAIRY AND BEEF CATTLE 

 GROWING INDUSTRIES. 



Chapter 203, Acts of the 34th General Assembly : 



Sec. 1. Iowa State Dairy Association. Whenever the organization 

 now existing in the state of Iowa and known as the Iowa State 

 Dairy Association shall have filed with the secretary of state of the 

 State of Iowa verified proofs of its organization, the names of its 

 president, vice president, secretary and treasurer, and that it has 

 five hundred (500) bona fide members, such association shall be 

 recognized as the Iowa State Dairy Association of the State of 

 Iowa, and be entitled to the benefits of this act. 



Sec. 2. Inspection — instruction. For the purpose of aiding in the 

 promotion and development of the dairy industry of the state of 

 Iowa, such association shall cause to be made such inspection of 

 dairy farms, dairy cattle, dairy barns and other buildings and ap- 

 pliances used in connection therewith, dairy products and methods 

 as they shall deem best and shall arrange to furnish such instruction 



