ILLUSTRATIONS 



PLATES. 



Page. 

 Plate I. Pastures showing improvement due to two years' protection by 

 fencing. Fig. 1. — Range land inside and outside of the fenced area 

 in June, 1903. Fig. 2. — Range land inside and outside of the fence 



line in April, 1905 8 



II. Comparative growth of grass on range lands in a good and a poor 

 season. Fig. 1. — Field of Bouteloua rothrockii in a good season, 

 1908. Fig. 2.— Field of Bouteloua rothrockii in a poor season, 

 1907 14 



III. Views in the inclosed area. Fig. 1.— A close view of the southeastern 



portion of the inclosed area. Fig. 2. — General view of the south- 

 eastern portion of the inclosed area 16 



IV. Two grasses growing in the inclosed area. Fig. 1. — Muhlenbergia 



porteri growing under the protection of a cat-claw. Fig. 2. — 



Isocoma coronopifolia growing on range land 18 



V. Heavily grazed pastures in the smaller inclosure. Fig. 1. — A badly 

 overgrazed area in the "MacB." pasture. Fig. 2.— Upper portion 

 of the 590-acre pasture, showing spring vegetation under heavy 



grazing 20 



VI. An arroyo and a perennial-grass field in the inclosed area. Fig. 1. — . 

 An arroyo producing brush and cacti but very little grass. Fig. 

 2. — Field containing Baileya multiradiata, a conspicuous plant 

 about the lower border of the perennial-grass region 22 



TEXT FIGURE. 



Fig. 1. — Map of fenced pastures in the Coronado National Forest, compiled 

 from maps by the United States Geological Survey, the Forest Serv- 

 ice, and the Bureau of Plant Industry 8 



177 

 6 



