122 



Journal of Agricultural Research 



Vol. Ill, No. a 



blades and by an increase in the size of existing tufts or hummocks of 

 tussock-forming plants. The leaf- blade increment is shown in Plate XXI, 

 figures 2 and 3, where contiguous areas protected and grazed aimually 



prior to seed maturity are compared. The leaf blades began to increase 

 in number and length iiJter the first year of protection and continued 

 throughout the four years. The greatest development in the foliage 

 came in the second year of protection, when the plant for the first lime 



