With these they built immense buttresses on the bank of the river, wide at the bottom and narrow at the top so they would not tumble down nor slip into the waters. Of course they had to leave holes in the sides to fasten the cables into. It took several strands to make the bridge wide enough, and even then the natives were afraid they would fall into the water.
"We need a railing at each side," they said.
"Very well; make one out of the ropes," said the wise men. When this was done the natives were still unwilling to try to go across.
"We cannot take a single step. Our feet get tangled in the meshes of the cable."
"Overcome this by making some rough boards and laying them all the way over."
It was indeed a novel suspension bridge, for when the planks were put onto the cable it sagged in the middle and swayed forth and back in the wind like a swing. Imagine how frightened the natives must have been at first, but in that mountainous country they never build any other kind of bridges and they use them now all of the time.
"In this open stretch of valley and plain we will plant sweet-smelling trees and shrubs by the roadside so that travelers may be refreshed by the shade and enjoy the perfume, and we will also teach the Children of the Sun to build tambos or post houses," said the Golden Hearted, when once they were over the mountains. This they did at every point where they stopped to rest, and at each one they left a band of chasquis, or runners in charge. The word chasqui means "one who makes an exchange," and these men and boys not only carried the news like our postmen and messengers, but they traded news with each other and with every one else they met. Before allowing any of the runners to go out the Golden Hearted said: "I will make you keepers of the Quippos, or knotted cords. The red ones mean war, or other bad news, while the white ones are for peace and prosperity. In the springtime if the crops are good, you must carry bands of green cords. If you wish to spread the reports of gold and silver use that kind of quippo, so that the people seeing you far off may know the import of your message. Count them always by tens and twenties, and use diligence and care to be accurate and quick in your calculations."
This was a queer kind of arithmetic but it was astonishing how soon the boys learned it. In after years there were bands of strolling singers and poets who went about the country, and they used the quippos to recall the things they wanted to remember, such as the brave deeds of their ancestors and the names of their heroes. So long as the inhabitants of this country were called Children of the Sun, they had no other books and they trained young men to be experts in reading them. The language of the Quippos is said to be very correct and elegant.