SECTION OF WALLS OF THE FORTRESS.
"Military men who have examined the fortress say that the walls were constructed quite in accordance with the best engineering science of modern times; on its only assailable side the walls are provided with salients, so that every point could be covered by a parallel fire from the weapons of the defenders. The walls are composed of immense blocks of blue limestone, and each salient has one of these at its end. In some places the great stones are piled one above the other; one stone, twenty-seven feet high, fourteen broad, and twelve in thickness, lies upon another of almost the same dimensions. Blocks measuring fifteen feet in length, twelve in width, and ten in thickness are common in the outer walls!
"Turn to the description of the Temple of the Sun, at Baalbec, and see how much the work of the Peruvians resembles that of the people of ancient Palestine.
"Some of these stones were hewn from the hill not far from where they are found, while others were brought from the cliffs three fourths of a mile away. In the quarries at the cliffs there are several stones partly hewn, and there are two roads still to be traced, along which the blocks were drawn. The evidences are that the stones were roughly cut at the quarries, then drawn along the roads, and fitted in their places on arriving at the fortress.
SALIENT ANGLE OF FORTRESS.
"To have a realizing sense of the size of the stones used in building the fortress of Cuzco, look at the picture of one of the salient angles of the wall, and the figure of the man leaning against it. Consider the man to be of ordinary stature, and you can readily compute the height of the stone.