Nov. i6, 1914 



Revegetation of Range Lands 



123 



was able to manufacture ample food. Many species of grass had doubled 

 in length by the end of the fourth year. 



The increase in actual stand or ground cover was due almost entirely 

 to the enlargement of the tufts, and text figures 5 and 6 show that even 

 under season-long protection the bunch-grasses and other valuable plants 



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do not increase rapidly by this means. Planimetcr measurements of the 

 tufts showed an average increase in diameter of only 18 per cent for the 

 third year of complete protection. 



The young, small tufts were the only ones to increase noticeably in 

 size. The tufts of mountain bunch-grass and most tussock-forming 



