FOREST TO PRINTING PRESS 



55 



hardened sufficiently to carry its own weight. Then 

 the screen leaves and the sheet, continually being 

 dried by the steam heated drums, hurries on the 

 length of the room to a great roll at the end. Fre- 

 quently in the manufacture some little weakness 

 develops and the sheet tears across. In such an 

 event, before the machines can be stopped, the 

 whole room may be filled with damp paper and the 



The wood bolts intended for pulp manufacture are usually floated 



down the river to the mill where they are stacked by machinery in great 



piles to supply the machines throughout the year. 



attendants fairly overwhelmed with its billows. 

 This waste, however, goes back into the beaters and 

 soon comes out again in liquid form for another 

 try. Modern machines produce newsprint at very 

 high speed in rolls fifteen to seventeen feet wide. 

 The chemical processes of pulp making are ex- 



