426 THROUGH CENTRAL BORNEO 



about 25,000. Down the river they have a few kampongs 

 below Long Pangian, in the same vicinity; west of it 

 are a few more, as mentioned in the description of my 

 journey. On attempting to ascend the river further one 

 would soon reach a vast extent of country entirely un- 

 inhabited except around the headwaters. The Bahau, 

 too, is inhabited only at its source, and both rivers pass 

 through wild, picturesque regions. 



On that portion of the Kayan called Brem-Brem the 

 river presents a formidable array of kihams which de- 

 feated the government's attempt to establish communica- 

 tion between Apo Kayan and the debouchure of the river. 

 This was desirable for the sake of provisioning the gar- 

 rison. An officer of the Dutch army in Borneo told me 

 that from military reports and the testimony of Kenyahs 

 he estimated that the Brem-Brem is a continuous stretch 

 of kihams for thirty kilometres. The Kenyahs had told 

 him that they walked two days and he thought that for 

 four kilometres the river ran underground. These difficult 

 conditions compel the Kenyahs to take another route in 

 their travels to Tandjong Selor, marching over the water- 

 shed to the Bahau River, where they make new prahus 

 and then continue the journey. 



T give a list of subtribes with reserve: 



Oma-Bakkah, Oma-Lisan, Oma-Kulit, Oma-Lim, 

 Oma-Puah, Oma-Yalan, Oma-Tokkung, Oma-Bakkung, 

 Oma-Bam, Oma-Lung, Oma-Badang, Lepo-Tepo, Lepo- 

 Tao, Lepo-Maot, Lepo-Ke Anda Pah, Lepo-Ke Ang 

 Lung, Lepo-Ke Oma-Lasang. Most of the Lepo are on 

 the Bahau. My informant, who had travelled in the 



