A SINGULAR DISCOVERY
the taste evinced in the numerous wall-patterns show that a people of advanced culture inhabited it. The jeweller's work is in high relief, and the pottery and plaques found exhibit much artistic excellence.
Pachacamac
The famous ruins of the temple and city of Pachacamac, near the valley of Lurin, to the south of Lima, overlook the Pacific Ocean from a height of 500 feet. Four vast terraces still bear mighty perpendicular walls, at one time painted red. Here was found the only perfect Peruvian arch, built of large adobe bricks—a proof that the Peruvian mind did not stand still in matters architectural at least.
Irrigation Works
It was in works of irrigation, however, that the race exhibited its greatest engineering genius. In the valley of Nasca the Incas cut deep trenches to reinforce the irrigating power of a small river, and carried the system high up into the mountains, in order that the rainfall coming there from might be conducted into the needful channel. Lower down the valley the main watercourse is deflected into many branches, which irrigate each estate by feeding the small surface streams. This system adequately serves the fifteen estates of Nasca to-day! Another high-level canal for the irrigation of pasture-lands was led for more than a hundred and fifty miles along the eastern slope of the central cordillera.
A Singular Discovery
In Peru, as in Mexico, it is probable that the cross was employed as a symbol of the four winds. An account of the expedition of Fuentes to the valley of
