428 



Missouri Agricultural Report. 



Make a smooth interior finish and wash down the whole of both 

 the interior and exterior with a cement wash (cement and water) or 

 with some waterproofing wash or paint. It may be necessary to re- 

 wash the interior wall surface every few years. 



Openings for doors can be left as desired, and a chute built of 

 concrete, terra cotta or tile pipe may be built simultaneously with the 

 walls. 



The roof may be built of concrete or timber. It should have a 

 manhole and a ventilator. Make provisions also for ventilating the 

 spaces between the walls. 



Fence Posts — The usual length of fence posts is 6% feet. The 

 cross-section varies more with the individual opinion than that of the 

 length. In some they are of a square cross-section five to six inches 

 at the large end, tapering to three to four inches at the small end; 

 others are rectangular, about 4x6 at one end, tapering to 3x4 at the 

 other; still, others have been made in a triangular form, with 

 equilateral triangles, of sides six inches at the butt end to five inches 

 at the small section; some are of the same cross-section the whole 



Figure 19. Concrete posts. 



length, while still others are circular in form. A good form is a 

 square cross-section five inches at the large, tapering to three inches 

 at the small end, and reinforced with a one-half-inch rod or the equiva- 

 lent at each corner. The corner and gate posts should be nine inches 



