FIFTIETH ANNUAL CONVENTION 157 



Several Ventilators Easily Made. 



Several types of ventilators, either in a horizontal or a 

 vertical position, can be used effectively in drying corn. 

 The type to use will depend on the material available. The 

 ventilator can be made by placing two-by-eights from 8 to 

 12 inches apart and nailing slats across. The fact that air 

 can enter freely at all four corners makes a very desirable 

 ventilator. 



In using ventilators in a horizontal ventilator scheme, 

 the bed of the crib should first be covered about two or 

 three feet deep with corn, and the first tier of ventilators 

 then placed on the corn, lengthwise of the crib. More corn 

 should then be added for two or three feet and more venti- 

 lators placed, this process being continued until the crib is 

 filled. These ventilators should be spaced from two to four 

 feet apart, depending on the softness of the corn. 



When the ventilators in the second set are being 

 placed, they should be put midway between those in the 

 first set and not directly over them. The ventilators in the 

 third set go directly over those in the first set. 



A-Shaped Ventilator is Good Type. 



An A-shaped ventilator not only is giving satisfactory 

 results in Illinois but also is being used with success in some 

 of the other corn-belt states. The chief point to keep in 

 mind in building such a ventilator is to build it high enough 

 so that the distance thru the corn is about the same at all 

 points. 



Artificial heat can be used with such a ventilator to 

 hasten the drying of the corn. The heater or stove can be 

 placed outside the crib and the heat brought in thru the 

 end of the ventilator, or the heater placed right in the ven- 

 tilator. If the latter is done, it is essential that the ends of 

 the ventilator be closed, so that the heat will pass up thru 

 the corn. The heater also would have to be at least par- 

 tially incased with sheets of asbestos or tin to prevent fire. 

 Where a boiler is available, steam pipes would be satisfac- 

 tory for heat. 



