"To do that, we should have to cover a bare patch under the cross-fire of Mazzani and Forsetta. They are good shots. They won't miss us." "Then what?" "Well, let's defend ourselves here." It was good advice. The cargo of marble blocks, piled higgledy-piggledy like a child's building-bricks, formed a thorough citadel. Dolores and Simon climbed it and at the top selected a fort, protected on all sides, from which they could see the slightest movements of their enemies. "They're coming," Dolores declared, after an attentive scrutiny. The river had deposited along the banks trunks of trees and enormous roots, drifting it was impossible to say whence, which Forsetta and Mazzani were using to cover their approach. Moreover, at each rush forward they protected themselves with broad planks which they carried with them. And Dolores called Simon's attention to the fact that more things were moving across the bare plain; more shields improvised of all sorts of stray materials: coils of rope, broken parts of boats, fragments of pontoons and pieces of boilerplate. All these things were creeping imperceptibly, with the sure, heavy pace of tortoises making for the same goal, along the radius that led to the centre. And the centre was the fortress. The tramps were investing it under the orders of Mazzani and Forsetta. From time to time a limb or a head appeared in sight. "Ah!" said Simon, in a voice filled with rage. "If only I had a few bullets, wouldn't I stop this inroad of wood-lice!" Dolores had made a display of the two useless rifles, in the hope that the threatening aspect would intimidate the enemy. But the confidence of the attackers increased with the inactivity of the besieged. It was even possible that the two Indians had scented the ruse, for they scarcely attempted to conceal themselves. To show his skill, one of them--Forsetta, Dolores declared--shot down a sea-gull skimming along the river. Mazzani accepted the challenge. An aeroplane, humming in their direction and flying lower than most, seemed suddenly to drop from the clouds and silently glided across the river, over the blocks of marble. When it came level, Mazzani threw up his rifle, slowly took aim and fired. The pilot was hit, bore downwards, heeled over on either side alternately, until he seemed about to capsize, and passed on, disappearing in a zig-zag flight like that of a wounded bird. And suddenly, Simon having shown his head, two bullets fired by the two Indians ricochetted from the nearest stone surface, detaching a few splinters. "Oh, please don't be so imprudent!" Dolores implored. A drop of blood trickled down his forehead. She staunched it gently with her handkerchief and murmured: "You see, Simon, those men will get the better of us. And you still refuse to leave me? You risk your life, though nothing can affect the issue?" He pushed her away from him: "My life is not at stake. . . . Nor yours either. . . . This handful of wretches will never get at us."