Archaeological Investigations in Jefferson County, Mo. 169 
Only a few flint rejects, hammerstones, and the bone orna- 
ment were found in the mound. Not a fragment of pottery was 
found either in the mound fill or in trenches excavated around the 
mound. The primary mound with effigy stone platforms, the 
tightly bound intrusive burial, the ossuary all seem to represent 
different events. The two extended sub-mound pit burials also 
seem to have been one event separate from the primary mound, 
the flexed burial and the ossuary. 
THE SCHOCK MOUND (LOCATION VIL) 
Jo19 
Like the St. Jo mounds, the Schock mound is located on top 
of limestone bluffs overlooking the Mississippi River, but there 
is no surrounding village site. The bluff at this point is known 
locally as Buck Knob. The mound is low-domed and is small but 
the bluff slopes sharply off on the north, east and south giving 
the impression of considerable height. During the course of in- 
vestigation it was found that most of the northern half of the 
mound had been excavated by commercial diggers and there 
was a very deep and extensive pit at the center when we began 
work. The mound had been covered with angular chert blocks 
and just southeast of the center was a rectangular flat lime- 
stone slab platform at the base of the mound containing four 
stoups of extremely fragmentary bundle burials of adults. There 
was no grave furniture. Over the edge of the platform and 
partly over the burials was an oval vault without roof made 
up of angular flint residual blocks. (See Plate IV A). After 
dirt fill had been placed in the vault, a crude wooden structure 
was placed along the upper inside edge of the vault and a fire 
was kindled which discolored the vault fill down to the burials. 
Some of the lower ends of charred posts were still in position. 
Beneath the rectangular platform was a narrow deep pit contain- 
ing fragments of charcoal and ash. The angular flint rock mound 
was erected to enclose the vault and over the mound fill sur- 
rounding it. Although a very thin layer of humus covered this 
Tock mound it is possible that it was the product of later accumu- 
lation of vegetable matter. The northeast corner of the vault 
had been disturbed. 
