L17. P8 Monday, May 25. A fair night. For two days though we have had quite a lot of cloudy weather rain has fallen seldom. No mammals in traps but another of the large Nyctomys brought in. Went to "third" stream where found sandstone beds in creek bottom. Got pettle of phyllite or very fine-grained quartzite which contains 5 shell-fools (?) . I found also lignite strata containing what Bress believes to be the spines of Araucaria. Also have in stream bed a piece of silicified wood (? palm) In the clay at the junction of the two streams there were small inclusions of lignite up to 2 inches long. The sandstone is a loosely compacted, friable rock with beds seeming nearly horizontal. The up-stream beds possibly indicate a slight anticlinal structure. Could not determine whether ss above or below the lignite. Both topped by several feet of heavy clay. This pm. changed my 10 experimental traps, which have caught nothing since they were set out first, from the crest of a ridge down to the river bank. Far from optimistic however, a few lots continue to be brought in by local people. Not a single rodent has so