314 SOILING CROPS AND THE SILO. 



may be tacked to the stud nearest to the place of 

 the overlapping. 



When putting on the lining it is important that 

 the boards shall be so put on as to aid in binding the 

 corners of the silo. This may be done by having 

 each alternate board extend to the outside of the 

 studding of the walls which stand at right angles 

 with the board. Both ends of each board thus 

 extended can then be nailed to a stud properly 

 adjusted in each of the two walls just referred to. 

 This can only be done, however, when the boards 

 used in lining are of an equal width. 



When it is deemed necessary to put on two 

 thicknesses of boards, that first put on should be 

 nailed directly to the studs and in a horizontal posi- 

 tion. These boards need not be planed, but the end 

 sought will be better secured if they are jointed. A 

 lining of tarred paper is then put on over the boards. 

 Over the tarred paper a second lining of jointed 

 boards is nailed. Inch boards are commonly used, 

 but those somewhat less in thickness will suffice. 

 The boards of the second lining should break joints 

 with those of the first, as shown in Fig. 36. 



The Outer Lining. When the silo is built 

 within another building, no outer lining is usually 

 necessary. When one or two sides of the building 

 also form the outer walls of the silo, the siding that 

 has been used upon either will usually answer also 

 for the outer lining of the silo, and without any 

 change. When the silo extends upward through 

 the roof of a building, the outer lining of the part 

 which thus projects may be similar to the siding of 

 the building. When the silo is built without, it may 



