184 The first part of the track along the crest of the mossy divide,of the Idenburg, in a bad state with much heavy traffic and rain. Roots of trees once buried in the thick moss cover, protrude brown and bare and often broken, sometimes shin-high fro the ground, and in every little depression is a puddle of soupy brown peat or a mixture of peat and pale yellow clay. The edge of the Idenburg slope, a rim of Menolakt6, the great flat valley of the Menolakt6, was reached in 35 minutes, the leading carriers on the heels of my collecting boys all the way. On the steep descent one enters open rain-forest about 30 m. down from the crest an about here was seen the last Sama tree (at810 m.). Down to 750 m. numerous slender surface roots cover parts of the ridge crest and a little ground moss occurs. Agathis goes down to just that level. From 750 m., or say 700 m., there is little change in the general character of the vegetation to between 200-300m.,when the oaks drop out or at least were no longer noted and some minor plants (ie. a nowhere Licuala sp.) make their first appearance. Oaks are nowhere in sufficient abun- dance to characterize the forest or cause changes in the undergrowth. At 700 m., an open spot on the spur from which the serpentine bends of the river below Bernhard Camp can be seen, I lingered behind the transport to collect and troch iftund camp did not reach camp until 11.30. Here, at the new camp established for collecting, and a flood refuge in case of need, I found Teerink, Huls and Toxopeus sitting among my baggage under the dining shed, busily swatting mosquitoes. Small black stingless bees were crawling stickily over sweaty painted bags in which my speci- mens and papers were packed. Toxopeus is staying here for a few days to collect. Teerink and Huls soon departed for Bernhard Camp and after a bath (temp. 73 f.) lunch and a rest, I took all my collecting staff on a visit to Bernhard Camp. A good track leads down to the canoe landing on a small creek, and the distance bet- ween camps could be covered in 25 minutes if one liked to hurry. New camp 7 km. a little west of south from Bernhard Camp and 25 m. higher (ie. 75 m. alt.). Found Bernhard Camp greatly altered in appearance since we left it early in January. The floods which had covered the highest ground to the depth of 1 foot had left a deposit of grey silt, beginning to take a powdery form upon drying. There was a