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<br />For eaxmple, if 45 sample@ are daremmined to be necessary for an <br />adequate sample for a vege~iron type and not more than eight <br />samples per cluster is desirable, then six clusters would be <br />located, with each representing one-sixth of the total area in the <br />type in question. Actual location of each cluster area was <br />accomplished by overlaying the transparent acetate grid over the <br />aerial photo. One of three, four, or five grid lines on the y-axis <br />running through the area representing one-sixth of the total area <br />was randomly selected and one of three, four, or five of the grid <br />lines on the x-axis was selected at random. The center of the <br />cluster was located where these two randomly selected grid lines <br />crossed. <br />• Within each cluster, one of six grid lines, two paces apart, <br />running perpendicular, and one of six grid lines, two paces apart, <br />running crosswise in each quarter of the area, were randomly <br />selected. Where these dissect each other, a plot was located. <br />This was repeated a sufficient number of times to obtain an <br />adequate sample, with each of the quarters of the area having one <br />fourth of the samples. <br />• Inventory Results <br />Floristic Composition and Herbaceous Cover <br />The species composition of the three vegetation types, aspen, <br />mountain brush and sagebrush, is shown in Tables 1, 2 and 3 respec- <br />tively. The percent cover of herbaceous plants for each of the types <br />. was about the same (Table 4). the herbaceous cover in the aspen <br />II.J-4 <br />