e in the autumn of
1948, but the house was already in disrepair then, and
seemingly it was used only as a stopping place.

No. 4. At the hilltop outcrop where an elm had fallen across
it. The decaying log remaining was approximately 12 feet
long and 15 inches thick. This log passed diagonally through
the house, providing its main support. The house was
approximately 39 inches high, its summit extending a little
above the level of the top of the outcrop. The house was
approximately seven feet wide along the outcrop. This house
was somewhat intermediate between the typical dome-shaped
stick piles that the rat builds in open situations and the
formless accumulations of sticks with which some rats living
in deep rock crevices line the entrances. Part of the
accumulation was beneath the limestone boulders and
outcropping slabs. Approximately half of the material used
in the house consisted of sticks and the remainder of pieces
of bark and chips of wood, mostly gathered from the fallen
elm. This house had shrunken noticeably from decay and
settling in the months since it was occupied, in the autumn
of 1948. The house was surrounded by a thicket of fragrant
sumac, dogwood, and hackberry saplings.

No. 5. At edge of a protruding boulder one foot thick at the
hilltop outcrop of the west facing escarpment, and 100 feet
back in the woods from the edge of a corn field, in
undergrowth of dogwood, wild currant, and coralberry. The
house consisted of a pile of rotten twigs, 3 inches deep and
30 inches wide on the upper side of the boulder, and a
lining of similar material at the lower edge of the boulder,
partly blocking the crevice beneath it. The twigs composing
the house were old and rotten. However, a few dry but still
green hackberry leaves were stored in the crevice beneath
the boulder. In a bare space atop the boulder were several
recent woodrat droppings, small and obviously produced by an
immature individual, which, perhaps, had recently settled at
this old house site.

No. 6. In hilltop woods, 30 feet from a corner adjoining a
pasture and a corn field, at the base of an osage orange
tree of one foot DBH, and also over a hollow cottonwood log
one foot in diameter and three feet from the osage orange
tree. Suspended mats of