Riv. BAS. Sur. re 
Pap. No. 31] TIBER RESERVOIR BASIN—MILLER 947 
in the clay directly under the center of each area, and the intensity 
diminished as the edges were reached. Resting directly upon these 
areas was the usual ash bed, together with a few small particles of 
burned bison bones as well as bits of charcoal. The wood ash is very 
reminiscent of oxidized cottonwood, both in color and composition. 
Beyond the mere presence of these two burned areas there were no 
remains of human cultural material whatsoever. (See fig. 40, Pro- 
file of Section 3.) 
Section 4.—Section 4 was 32 feet south of Section 3. It measured 
10 feet in length, 5 feet in width, and extended downward to a depth 
of 9 feet. In this area the lowest culture-bearing stratum had leveled 
off so that it lay a little over 8 feet beneath the present ground level. 
At the beginning of our activities in this section a series of river 
cobbles was noted partially projecting out of the riverbank and 
extending horizontally about 8 feet from the top of the ground. 
Upon investigation it was found that these rocks occupied a saucer- 
shaped hearth area, Feature 19, together with a number of disarticu- 
lated bison bones consisting of ribs, rib fragments, sections of long 
bones, a few vertebrae, and what we have identified as miscellaneous 
deer bones. Nothing diagnostic of the culture of the builders of the 
hearth or the killers of the animals was found within this entire 
section. 
Section §—Another rock-filled hearth area was noted between 34 
and 42 feet south of Section 4. Another 20-foot section, 28 feet south 
of Section 4, was measured off, allowing enough room on either side 
for future expansion if necessary. Like all the other sections this 
one measured 5 feet in width and was taken down into sterile subsoil 
ata depth of over 9 feet. 
No cultural evidence was found until we reached the 4.4-foot level, 
where there were two circular burned areas, brick-red in color, and 
of different sizes. Feature 12, the smaller of the burned or hearth 
areas was located adjacent to the south wall of the trench, while 
Feature 11, the larger hearth area, occupied a position more to the 
center of the trench. Both features showed that a moderately intense 
fire had been built upon the spot, leaving behind a bed of whitish- 
colored ash together with bits of charcoal as well as a number of 
fire-cracked and/or broken stones and a few bone fragments which 
were not affected by fire. 
Section 6—Another section for exploratory purposes was measured 
off 141 feet south of Section 5. This section measured 15 feet in 
length, 5 or more feet in width, and at the completion of the excava- 
tion was slightly over 9 feet in depth. 
Three hearths (Features 3, 8, and 9) and a layer of scattered bones 
were located in this section. All the hearths showed little deviation 
from the type of those in other sections and only varied in actual 
