The glyphs are, as will be seen, so arranged that when the figures of one row are right way up, those of the one immediately below it are on their heads; thus only alternate rows can, at the same time, be seen in correct position (fig. 98). The method of reading was, according to Te Haha, to read one row from left to right, then come back reading the next from right to left, the method known as boustrophedon, from the manner in which an ox ploughs a furrow. The finished ones were wrapped in reeds and hung up in the houses. According to two independent authorities they could only be touched by the professors or their servants, and were taboo to the uninitiated, which, however, does not quite agree with other statements, nor with that of the missionaries that they were to be found in “every house.” They were looked upon as prizes to be carried off in war, but they were often burnt with the houses in tribal conflict. [Illustration: FIG. 98. [_Brit. Mus._ PORTION OF AN INCISED TABLET (Kohau-rongo-rongo). ] Ngaara is said to have had “hundreds of kohau” in his house, and instructed in the art, which he had learnt from his grandfather. He is described, with a vivid personal touch, as teaching the words, holding a tablet in one hand and swaying from side to side as he recited. Besides giving instruction, he inspected the candidates prepared by other professors, who were generally their own sons; he looked at their kohau and made them read, on which he either passed them, clapping if they did well, or turned them back. Their sponsors were made personally responsible. If the pupils acquitted themselves creditably, presents of kohau were made to the teachers; if the youth failed, the tablets of the instructor were taken away.