42 BULLETIN" 947, U. S. DEPARTMENT OF AGRICULTURE. 



showed that the outside range had about one-third more H. hoopesii 

 plants than the area inside. This would indicate that at this time 

 there was an actual reduction in the abundance of the II. hoopesii. 



July 25, 1918, the patch was visited and it was found that sheep 

 had broken in on the upper part of the inclosure and had grazed it 

 considerably, eating especially the dandelions. The H. hoopesii of this 

 season was very abundant and thrifty from the fact that the season 

 was wet and favored the growth of the plant. It was very evident, 

 however, that the H. lioopesii was much more abundant outside the 

 inclosure than within. The area had been somewhat washed by the 

 rains and the grass was not so abundant as would have been expected. 



September 9, 1918, a careful examination of the patch was made. 

 By counting the plants on measured typical areas, it appeared that 

 the H. lioopesii was nearly twice as abundant outside the inclosure 

 as it was inside. The exact proportion was five to three. Inasmuch 

 as the area outside had been badly trampled and many plants 

 destroyed, it is probable that the difference between the two areas 

 was really greater than that established by the count, for all the 

 plants on a given area of the inclosure would be recognized, while 

 many of those on the outside would have been destroyed by grazing 

 animals. The difference in vegetation between the areas within and 

 without the fence was very marked, and stockmen who had been 

 observing the experiment considered it very good evidence of the 

 beneficial effect produced upon the range by giving it an opportunity 

 to recover. 



July 29, 1919, an examination showed that the H. lioopesii was 

 still abundant, but, as in the preceding year, was in much smaller 

 numbers than outside. 



August 5, 1919, a detailed examination was made. The H. hoopesii 

 was matured and on account of the dry season was very nearly in 

 the same condition that it was in September of the preceding year. 



Cattle had broken into the inclosure and had grazed upon the 

 grass, apparently having, to a large extent, eaten the seed stems of 

 the grasses. The grass was not quite so thick as early in the season, 

 but this appearance may have been due, in part at least, to the 

 accidental grazing. Again a count was made of the relative number 

 of the H. hoopesii plants inside and outside of the inclosure, and it 

 was found that the average was in the ratio of llf to 19. 



During the summer of 1920 there was an abundance of rain in the 

 mountains, with a consequent vigorous growth of all forms of vege- 

 tation. When the patch was examined August 23 it was well covered, 

 the wheat grass which grew all over it being especially marked. 

 There was a considerable quantity of Gymnolomia multiilora, which 

 being in blossom at the time, gave the patch a general yellow color 

 when seen from a distance. -The other plants present were dande- 





