IN FOG AND DARKNESS—A RAID BY ANTS—DEPARTURE FROM LONG PELABAN—AN EXCITING PASSAGE—RETURN TO TANDJONG SELORDEPARTURE FOR BANDJERMASIN—A PLEASANT STEAMSHIP LINE—TWO HEAD-HUNTERS— AN EXPEDITION TO LAKE SEMBULO—SAMPIT—THE ORANG-UTAN—STORMY WEATHER—A DISAGREEABLE RECEPTIONCHAPTER XI