Il6 BEET-ROOT SUGAR AND 



feet, chimneys two or three inches square, made of 

 rough boards. These chimneys extend from the bot- 

 tom to the top of the pile. In some cases a bundle 

 of twigs five or six inches in diameter, and in others a 

 pole wrapped loosely around with straw, takes the 

 place of the chimney. Sometimes these chimneys 

 rest upon the top of triangular frames or ventilators. 

 These are made of a piece of board, perhaps a foot 

 in width, and another narrow strip, say of scantling. 

 Laths or short narrow strips of wood are then nailed 

 upon the board and scantling, in such manner as to 

 form a triangular frame, like the roof of a house, the 

 board serving as the floor, the scantling as the ridge-, 

 pole, and the laths as the rafters. 



These frames are placed end to end upon the 

 ground, running longitudinally in the centre of the 

 proposed pile, which is then placed about them in 

 the same manner as described for the ordinary piles ; 

 the chimney is placed in the centre, and is connected 

 with the ventilators, as has been described. Every 

 twenty or thirty feet a frame also runs across the pile. 

 The mouths of these ventilators come to the outside 

 of the completed pile, and are stuffed and completely 

 protected with straw, which can easily be removed, 

 and by which the supply of air can be regulated. It is 

 best, if possible, to have the piles and silos run north 

 and south, having the end to be first opened facing 

 the south. By this arrangement it is easier to protect 

 the pile effectually, with earth and straw, from the in- 

 fluence of cold north winds ; while the end which is 

 to be opened, being on the south, is warmer and better 

 protected. 



