There was an instrument room, up the circular incline in the peak of the tower! We heard the hum of it; and when we went up there, the first thing we saw was a mirror tuned in readiness for us to view the garden we had just left. This strange Tarrano, giving Georg the visible proof that he would keep his word and not harm Elza. We could see in this mirror the image of the scene down there--Elza and Tarrano talking. But could not hear the words--those were denied us. We saw the culprit brought in; the punishment with the white-hot wire-lash, and a few moments later Elza was with us. During the hours which followed, we made no attempt to escape. Such an effort would have been absurd. The current controls were outside, beyond our reach. Visibly, we were free, with open, unbarred arches and casements. But to pass through one of them, the barring current struck you like a wall, with darting sparks when it was touched. As Wolfgar had said, we had access to the upper balcony; the waist-high rail there, with its needle-points of electrodes, sent up a visible stream of the Nth Electrons--a dull glow by daylight; at night a riot of colors and snapping sparks. Through this barrage an inner vista of the city was visible; towers, arcades, landing-stages and spider bridges a hundred feet or so above us; the lower levels beneath, and through a canyon of walls we could just make out a corner of the ground-plaza, with its trees and beds of flowers. A queerly flat little city--tropical with banana trees and vivid foliage in every corner plot of the viaducts. At night it was beautiful with its romantic spreading lights of soft rose and violet tubes, and there was a fair patch of open sky above us--a deep purple at night, star-strewn. Under other circumstances our imprisonment would not have been irksome. But these hours, most critical of any in the history of the nations of Earth, Venus and Mars, unfolded their momentous events while we were forced there to helpless idleness. All sending apparatus of our instrument room was permanently disconnected. But the news came in to us from a hundred sources--rolled out for us in the announcer's droning words; printed for permanent record upon the tapes and visible images of it all constantly were flashing upon the mirrors. We spent hours in that instrument room--one or the other of us was almost always there. Save that we were ourselves isolated from communication, we were in touch with everything. A whim of this Tarrano; perhaps a strain of vanity that Elza should see and hear of these events. So much had occurred already during those hours of our trip over the Polar ocean and back that we scarce could fathom it. But gradually we pieced it together. Underlying it all, Tarrano's dream of universal conquest was plain. In the Venus Cold Country he had started his wide-flung plans. Years of planning, with plans maturing slowly, secretly, and bursting now like a spreading ray-bomb upon the three worlds at once.