PRESERVATION FOR STOCK FOOD 



76S 



climate of the Transvaal it proves both economical and effective. 

 At Potchefstroom it has been customary to make about 150 

 tons of pit-silage per annum, and at Vereeniging about 600 

 tons. These pits ( Fig. 240) are not lined in any way and have 

 no floor other than the solid ground. They are covered with 

 earth, and there is no roof over them, so that the cost of pre- 



CHAP. 



XV. 



Fig. 2;-;g. — Stack-silo, Springbok Flats, Transvaal. (Note that the rouo-h 

 sides have been pared smooth.) 



paration of the silo is very small. As the silage is stored 

 during the dry season, there is usually no danger of seepage, 

 provided a suitable site for the pit is selected ; in some 

 localities a catch-water ditch around the upper side of the pit 

 is found desirable. If the pit has to be made in loose soil, a 

 lining of corrugated iron or other suitable substance may be 



