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A NATIONAL PLAN FOR AMERICAN FORESTRY 



increase in total freight originating on these roads. Further increase in 

 the use of fiber containers is favored by changes in transportation and 

 handling methods which reduce shipping hazards, by the economies 

 possible with prepacking of merchandise, and by the probability that 

 research will further improve and strengthen the fiber box. 



Fiber boards as construction material are a comparatively late 

 development, but their use for insulation against heat, cold, and sound, 

 for concrete forms, and for various temporary purposes has grown 

 rapidly. Boards of this character, aggregating more than 120,000 

 tons in 1927, are not included in the statistics for paper consumption. 

 Some of them are made of straw, some of cornstalks, some of cane, 



FIGURE 6. Increase in number of pages per copy of daily papers since 1880. 



and some of wood. A demand for them has been established, and 

 the prospects are that their use will increase. 



OTHER PAPERS 



Fine papers constitute only about 5 percent of all pulp products and 

 have held closely to this proportion for 30 years. Consumption of 

 both book and wrapping papers has doubled in the last 20 years, but 

 the percentage fell from 16 or 18 percent of total paper consumption 

 in 1909 to about 12 percent in 1929. All other paper consumption 

 has held to about 12 percent of the total for the past 30 years. 



FUTURE PAPER REQUIREMENTS 



The forecasting of paper requirements presents in some respects an 

 even more difficult problem than that of lumber requirements. In 



