scoured out in small holes, and river sand and waterworn pebbles show plentifully under the leaf mould. There is abundant evidence of oc- casional high and violent flooding. Saturday, March 18, 1939. Dull day: little sun: heavy rain from thunderstorm commencing 5 PM and continuing into night: thunderstorms approach from up the valley, the strong wind accompanying them usually NNW. Rand left to do a few days collecting while the river is high at Bernhard Camp. Terrestrial birds must move to the high ground at the edge of the hills when the plains are under water as at present. Toxopeus also re- ported a new arrival, a small finch feeding on the seeds of a floating grass (Leersia?) on the river banks. Collected upstream about half an hour from camp. There the old flood- plains appear much broader than nearer camp, and are covered with a rather low forest of trees seldom more than body-thick and growing in loose forma- tion. Palms abundant in a more or less open sapling undergrowth. Trees mossy and considerable moss on the ground. Rain-forest. Poor in species. Is this valley too wet to support good forest? The partly boggy peaty Agathis forest, on ridges with a fair slope, might perhaps owe their distinctive characters to climatic rather than edaphic conditions. There is probably more rain in the valley, and certainly more mist and fog, than at our 1200 m. camp. Sunday, March 19, 1939. A dull showery day, not more than half hour sunshine: torrential rain 4-5.30 PM from thunderstorm rainy night.