53 
Mangrove Association at Langgén. 
On the spit of land between the two bays a Papuan “campong” was 
built among the mangroves, where *giceras floridum flourished as a round 
shrub about 1 m. high, covered with the white flowers and quaint fruit. On 
a tree overhanging the sea-water, *Lycopodium phlegmariodes with °Dendro- 
bium pseudo-calceolum in flower and various Dischidia spp. abounded. 
*Pandanus polycephalus with small red fruit bunched at the apex of the 
peduncle, common through the Moluccas, with *Hxewearia Agallocha and 
the climbers * Vristellateia australasica, a mass of yellow flowers, * Derris uligi- 
nosa and °Sarcolobus retusus, marked the land-edge of the mangrove-spit ; 
while °Freycinetia Beccarii, °Erythrospermum candida, the yellow-flowered 
*Durandea parvifolia, a Gardenia sp., with *Pollia sorzogonensis as under- 
growth, were found where the ground was more consolidated, and young 
colonies of *Pigafetia pilaris were quite abundant towards the shores of the 
second bay. 
Wousi and Genbela. 
Wousi, in earlier times the watering-place for all the boats calling at 
Dorei Bay, where the Papuan “ campong,” with a fringe of houses built over 
the sea, still stands, is a tiny valley cut out of the “korang” range by the 
action of the stream, the range from this point gradually sloping to the level 
ground. At the time of my stay Wousi was also the site of the Military 
Bivouac, and the base for the work of the Exploration detachments so suc- 
cessfully organized from 1907 by the military authorities at Amboina. The 
survey having been completed by the successful results of Captain Opper- 
man’s Expedition (27, 542-3) the bivouac has now been closed. 
In the military cartographical office hung a huge map of Dutch New 
Guinea, originally blank, filled in by degrees with tracings of the work 
of each Exploration detachment in turn. When I was shown this map 
only one blank space remained, viz. the source of the Mamberamo River. 
With the successful results of Captain Opperman and Mr. Langeler that 
blank space has also disappeared, and with it this admirable era of organized 
exploration is closed, the whole of the Dutch possessions in North New 
Guinea being now mapped out. 
At Wousi, under the shade of the overhanging trees, the ideal and 
classical anchorage was reserved for naval and military needs, and all the 
ground underneath the beautiful century-old trees behind the beach was 
cleared and grass sown, forming a fine green sward, where the quarters of 
the military and naval officers were built. Farther up the valley were the 
open barracks for the native troops, carefully arranged with intersecting 
white paths, beyond which again excellent gardens had been made up the 
bu.ks of the stream, where all the vegetables for the needs of the forces were 
