The illustration, reproduced here (fig. 46), exhibits an extremely ingenious mode of irrigation which divided the country surrounding the town into nine zones of land lying between currents of water. These are cut through by an exit canal which, at the same time, presumably supplied a direct water-way for traffic to and from the town. The association of the spiral form with irrigation would not, perhaps, seem as important and significant did we not know that the ancient Peruvians, as proven by Wiener, habitually laid out the irrigation canals in their maize-fields so as to form regular designs, some of which resembled those illustrated on fig. 40, nos. 2, 4, 6, 7, which have been shown to signify the union of the Above and Below, or Heaven and Earth. In the Peruvian irrigation canals the water supplied the light lines and the earth the dark, and when the small canals were full and were observed in certain lights, they must have resembled light blue or white patterns running through the dark earth. That their inventors and makers actually associated them with profound meaning and laid them from superstitious as well as practical motives is obvious; for, in Peru, as in Mexico, we find the periodical union of the Heaven and Earth, of rain and earth celebrated with ceremonial drinking of chicha, specially brewed for this period which seems to have been the regularly appointed time for juvenile match-making, by order of the Inca. “When the Inca gave women as wives they were received because it was the command of the Inca ... because of this it was considered that she was taken until death and she was received on this understanding and never deserted” (Molina). “When the Inca Rocca married his sister, six thousand people were married on the next day” (Montesinos). In the festival called Ccapac Raymi, maidens who had attained womanhood offered bowls of fermented chicha to the youths who had just been admitted to the ranks of the warriors. “During this festival the Priests of the Sun and of the Creator brought a quantity of fuel, tied together in handfuls, and dressed as a man and a woman ... they were offered to the Creator, the Sun and the Inca and were burnt in their clothes together with a sheep” (Molina).