cake not more than 30 cm. thick. Much weathered rock (gabo) showed in places in the bared clay in which the tree had grown. February 11th. Struck camp at 1800m. and left at 6.50 AM. The main party of carriers went through to the 1200 m. camp (Bivak Rotan). Rand, Van Arcken and myself stayed at Van Arcken's old 1500-1600 m. road camp. Sergt. Kreutzer, with five soldiers and two convicts, left the main track at the 1700m. summit and cut a track down to the Sigi, where Toxopeus plans to establish a collecting camp at 1400 m. We reached the 1500-1600 m. camp at 1.45, having lunched en route. Versteeg here also, to collect trees. Fine day. February 12th. Rand and his boys left for Rotan Bivak after lunch, the carriers returning during the afternoon to take other loads down in the morning. Had news by the return carriers that owing to the floods teerink is shifting the base camp from the Idenburg up.to Aracaria Creek and wants all available Dyaks and convicts sent down at once. Versteegh's field boys are demanded as well. Versteegh and self collected both morning and afternoon. Although oaks and Castanopsis are present, the forest of the ridge top (dominated by sama #11963 and #12733) is still mossy-forest in character and contains few spp. which do not occur at 1800 m. A fine palm, Gulubia #12742, with stem 25-30 m. long and swollen towards the top, occurs singly or in small groups on the crest. A fan palm with very large leaves, abundant at the 1200 m. camp, also occurs sparingly at the heads of gullies. The small rotan #12739 abounds throughout the crest forests and at least one other Calamus, a species with large leaves also occurs. #12119, smaller here than at 1800 m., also occurs. February 13th. Van Arcken left with the escort and carriers shortly after 6 AM for 1200 m. and