We do not think, however, that they as yet recommend 

 themselves to our South African conditions, where, as a 

 rule, either brick or stone is the more ready at hand. 



WARNING. Some days after filling there is likely to 

 accumulate above the silage a gas called carbonic acid gas, 

 to breathe which causes suffocation. Care should therefore 

 be taken that no one should descend into the silo to spread 

 or trample the arriving fodder till the air-currents have 

 been set agoing for some time by the opening of the doors 

 and the falling in of the green stuff. 



