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loo <br /> <br /> Four sites occur in the eastern tracts: 5RT22, SRT23, 5RT30, and <br /> 5RT31 in Tracts 7 and 3; in the western area, SMF317 and 5MF326 in <br /> Tract 9. Our Type IVB has attributes similar to those in Mulloy's first <br /> trait category. Projectiles of this type were found at 5RT23, SRT31, <br /> and 5MF326. Types IVA, IVD, and IVE, which fall into the second category, <br /> were recovered from SRT22, 5RT3U, 5RT31, and 5MF317. With the exception <br /> of 5MF317 and 5MF326, these sites cover an appreciable area, and have a <br /> fairly extensive inventory of artifacts and debitage. <br /> Both camp and lithic sites are represented in this time period. The <br /> <br /> locations for all sites listed above are similar: the general area is <br /> in a drainage basin with the site located on a small eminence overlooking <br /> a watercourse. Artifact distribution within these sites is too diffuse <br />,~ <br /> to determine whether or not there is a common pattern, or to identify <br /> functional areas within the sites. The lithic sites differ in that no <br />domestic tools are available. Otherwise, they exhibit substantially <br />similar characteristics in terms of location and relation to surrounding <br />topography. <br />The artifact inventory recovered from these sites suggests that hunt- <br />ing and gathering remained the basic subsistence mode. However, the end <br />of the Late Middle Prehistoric Period, there is evidence of horticulture <br />to the west of the study area in Dinosaur National Monument (Breternitz <br />1971> Burgh and Scoggin 1948). There is no direct evidence of such activ- <br />ities in the area surveyed. Furthermore, the relative frequency of <br />ground stone tools is unchanged, indicating that the dependence on vegetable <br />• foods has probably not increased to any great extent. <br />