When the sixth Inca acquired a new province, he ordered the lands to be " dressed and manured ;" the fens to be drained, " for in that art (draining) they were excellent, as is apparent by their works, which remain to this day ; and also they were (then) very ingenious in making Aqueducts for carrying water into dry and scorched lands, such as the greatest part of that country is ; they always made contrivances and inventions to bring their water. These Aqueducts, though they were ruined after the Spaniards came in, yet several reliques and monuments of them remain unto this day."

The seventh Inca, Viracocha, constructed some water works, which, in their beneficial effects, perhaps equalled any similar undertakings in any other part of the world. " He made an Aqueduct 12 feet in depth, and 120 leagues in length ; the source or head of it arose from certain

springs on the top of a high mountain between Parcu and Picuy, which was so plentiful that at the very head of the fountains they seemed to be rivers. This current of water had its course through all the country of the Rucanas, and served to water the pasturage of those uninhabited lands, which are about 18 leagues in breadth, watering almost the whole country of Peru."

There is another Aqueduct much like this, which traverses the whole province of Cuntisuyu, running above 150 leagues from south to north. Its head or original is

from the top of high mountains, the which waters falling