. Bulletin. Ethnology. 80 BUREAU OF AMERICAN ETHNOLOGY [bull. 76 Secondly, it may have washed through the doorway from the outer cave when the main outlet of the latter in the face of the bluff toward B (fig. 13) was obstructed in some way. This is im- probable. Thirdly, it may be due to material deposited in the eddy or swirl created by the corner of the west wall whenever a large volume of drainage water flowed from the westward in the main cave and was sharply deflected toward the south when it struck the east wall. This is no doubt the correct explanation. Whether or not these floods had a
. Bulletin. Ethnology. 80 BUREAU OF AMERICAN ETHNOLOGY [bull. 76 Secondly, it may have washed through the doorway from the outer cave when the main outlet of the latter in the face of the bluff toward B (fig. 13) was obstructed in some way. This is im- probable. Thirdly, it may be due to material deposited in the eddy or swirl created by the corner of the west wall whenever a large volume of drainage water flowed from the westward in the main cave and was sharply deflected toward the south when it struck the east wall. This is no doubt the correct explanation. Whether or not these floods had any part in piling up the clay at the doorway, beyond doubt it was to them that the clay, gravel, and sand resting upon the floor of the main cave owe their origin. To them is likewise due the dark earth overlying the clay at the rear and covering the floor of the recess in the east wall. Clearlj', there was at one time in the cave's history a current at intervals, which carried mud and small rocks from the interior of the cave, or from the outside surface through sink holes, and left at least a part of it where the velocity of the stream was checked. Later, much of this v\'ater found other drainage channels, and the coarser matter could no longer be carried into the cave; but at times of unusually heavy precipita- , „ ^, tion enough of the torrent followed the old course Fig. 17.—Clay . P ™ . pipe from to bring m the dark earth. The last is due to top Miller's Cave. g^^j containing a large amount of humus from de- caying vegetation. Finally, no more water came this way except as seepage, which is the condition at present. The pool at the rear may be entirely empty in dry seasons; and after heavy rains may contain a depth of 2 feet. This water now has a greasy looking scum and a sour, unpleasant odor. The cave was inhabited before the water had entirely ceased to flow through it; this is proven by the alternation of refuse and silt in the recess under the east Avail. Kitch
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