THE MANUFACTURE OF PAPER 



through the drying-room before going to the calenders. 

 The calenders are the same as those used in the other 

 processes of paper-making. When a web of paper is 

 to be coated on both sides it is started on rollers through 

 the enameling solution, emerging between two rolls 

 which regulate the thickness of the coating and re- 

 move the surplus. Next it comes in contact with the 

 brushes, arranged in sets so that the coarser brushes 

 act upon it first, fine camel' s-hair brushes giving it the 

 finishing touches. It is then passed on to the automatic 

 carriers, which take it through the drying-rooms heated 

 to about 140 F. where it becomes perfectly dry before 

 being sent to the calenders for the final polishing. The 

 degree of polish given the paper depends upon the 

 amount of pressure used on the calender rolls, and 

 the number of times that the sheet is passed through 

 the machine. 



This paper is somewhat similar to the glazed papers 

 used for covering boxes, and for making many fancy 

 articles. But in these papers wax is added to the coat- 

 ing, giving it the familiar gloss. 



SPECIAL USES OF PAPER 



In recent years paper has been used for a greater 

 variety of things than almost any other substance. Even 

 to catalogue these would require a volume. And 

 curiously enough these uses are as diversified and 

 frequently as diametrically opposed to each other as 

 possible. Treated in a certain manner paper may be 

 used as tinder for lighting fires; or if treated by a dif- 



