In the mirrored scene, a white dot was growing as it came closer to the lens. Its image grew; it resolved itself from a dot, so what Fahn saw was a thin, gleaming disc. It looked as though it might be whirling. The thing turned, pursued the lens, overtook it--the last mirror went dark. The operators, greatly upset, left their instruments and gathered around Fahn. Toroh had sent up some unknown mechanisms; the flying thunderbolt platforms had crashed to the ground before any of them had come within range of the enemy. It was during this same night that Toroh first used his audible broadcasting beams. Fahn's audible voices in the air had constantly been encouraging his people. Now, abruptly, the air burst forth with other voices. Somewhere in the mountains across the channel, Toroh had erected a broadcasting station. He was sending threats through the air to the Anglese! It was a surprise, and it disturbed Fahn greatly. Everywhere on the island aerial voices of the enemy were leering, threatening, boasting of the coming triumph of the Noths. Would the Bas be intimidated? It might be disastrous; with the defeat of the flying discs, Fahn was depending more than ever now upon the Bas army. All that night and next day, the sender from the cavern sent forth its cheering messages. By the following noon information began coming to Anglese City that the Bas were apparently not alarmed. They were jeering back at Toroh's aerial voices; but they were demanding vigorously that the Scientists give them weapons. "In a week we shall be ready," Fahn told Rogers. "Five thousand air-pressure cylinders are now in the last process of manufacture. The other weapons are ready. One week more is all we need." Amid Toroh's aerial threats that day had come the reiterated, triumphant statement that in two weeks more his attack would come. Two weeks still! It was more than Fahn had hoped for. The statement was Toroh's trickery. Eighteen hours later--the next morning at dawn--a member of the aerial patrol over the channel returned hurriedly to Anglese City with the news that Toroh's expedition had started by water. Huge barges were coming down the coast, pulled by the giant dogs swimming before them--_barges crowded with men and dogs and apparatus_. That morning was one of almost complete chaos. The invaders would enter the channel near Anglese City. The thunderbolt projectors which had been distributed thinly about the coast were rushed eastward and concentrated at the channel-mouth. There was no time now to equip the main Bas army. The attack would have to be repelled by the coast defense, and by the small aerial army already formed: one hundred Bas led by Mogruud; two hundred Scientists with whom Loto and George were to serve, and the twenty-six Scientist girls, led by Azeela and Dee.