206 PAGAN TRIBES OF BORNEO chap.
been laid. The columns of the double row in the middle line are about six feet taller than those of the front and back rows. For the support of the floor a massive squared transverse tie is morticed through each set of four columns at a height of some fifteen to twenty feet from the ground, and secured by a pin through each extremity. A squared roof-plate, still more massive than the floor ties, is then laid upon the crowns of the columns of the front
row, along its whole length, and a second one upon the back row. This is dowelled upon the columns (i.e. the top of the column is cut to form a pin which is let into the longitudinal beam); and the beams which make up the roof-plate are spliced, generally in such a way that the top of a column serves as the pin of the splice. Each of these heavy beams is generally lifted into its place by tiers of men standing on poles lashed at different heights across the columns, their efforts being seconded by others pulling on rattans which run from the beam over the