DAIRY HERD 55 



readily. And, fourth, it must be deep so that the weight 

 of the silage will give compactness sufficient to expel the 

 air which is held between the particles of silage. 



It is desirable that the total depth of the silo be at 

 least 30 feet. Where the ground is dry, five or six feet 

 of this depth may be underground. When '30 feet is 

 selected as the fixed depth, the silo can be made of the 

 desired capacity by selecting the proper diameter, which 

 may vary from 12 to 24 feet. 



CONCRETE; SILOS. 



Concrete has all the qualities sought in the construction 

 of an ideal silo when handled in the proper manner. There 

 are various forms of concrete silos built at the present 

 time. Some are built of hollow blocks, some with a 

 single solid wall, and others with a double wall and an air 

 space between. The single solid wall has proven popular 

 where tiie silo can be so located as to give it good pro- 

 tection from the cold of the winter. 



The following is a description of two single solid walled 

 silos built on "Michels' Stock Farm." (See Fig. 9^.) 



The silos are each fourteen feet, ten inches in diameter 

 (inside) and thirty feet high. The walls up to within 

 three feet of the doors are six inches thick; from this 

 point they gradually increase in thickness to eight inches 

 at the doors. The doors are of the continuous kind, 

 extending from top to bottom. The break in the silo 

 caused by the continuous door is strengthened by running 

 three-quarter inch iron rods horizontally across the open- 

 ing at intervals of twenty-four inches. The ends of these 

 rods are embedded in the concrete wall a distance of four 

 inches and fastened to them are the ends of No. 5 rein- 



