CONSERVATION OP THE SUGAR BEET. 253 



ters is 1.50 m. (4.92 feet) ; over these the roots are 

 placed with regularity, the longest being chosen for 

 this purpose, the object of which is to prevent imme- 

 diate contact with the water that results from the 

 evaporation of the silos or that is placed there with an 

 object. If we examine what takes place we see that 

 the current of fresh air can circulate without difficulty, 

 and in this manner the total mass can be kept at any 

 temperature that may be required. During very cold 

 weather it is advisable to close these openings, as 

 we have just mentioned the fact that water was at 

 times placed in the gutters, the object of which is to 

 make sure of a circulation of air, for as it flows from 

 the opposite side a certain volume is carried along. 

 The objection to this silo i& that there exists no ven- 

 tilation from the top. 



We now have a type (see fig. 60) which we consider 

 decidedly the best of any we have up to the present 



Fig. 60. 

 Longitudinal section. Vertical section. 



Good type of silo, ventilation being well understood.. 



time examined, that is fulfilling more nearly the re- 

 quirement that the beet shall be delivered after a 



