Mu Tel wished us luck and the ship slipped silently out into the night. The flier, like many of her type, was without cockpit or cabin; a low, metal hand-rail surmounted her gunwale; heavy rings were set substantially in her deck and to these her crew was supposed to cling or attach themselves by means of their harness hooks provided for this and similar purposes; a low wind shield, with a rakish slant afforded some protection from the wind; the motor and controls were all exposed, as all the space below decks was taken up by the buoyancy tanks. In this type everything is sacrificed to speed; there is no comfort aboard. When moving at high speed each member of the crew lies extended at full length upon the deck, each in his allotted place to give the necessary trim, and hangs on for dear life. These Toonolian crafts, however, are not overly fast, so I was told, being far outstripped in speed by the fliers of such nations as Helium and Ptarth who have for ages devoted themselves to the perfection of their navies; but this one was quite fast enough for our purposes, to the consummation of which it would be pitted against fliers of no higher rating, and it was certainly fast enough for me. In comparison with the slow-moving Vosar, it seemed to shoot through the air like an arrow.

We wasted no time in strategy or stealth, but opened her wide as soon as we were in the clear, and directed her straight towards the west and Phundahl. Scarcely had we passed over the gardens of Mu Tel when we met with our first adventure.

We shot by a solitary figure floating in the air and almost simultaneously there shrilled forth the warning whistle of an air patrol. A shot whistled above us harmlessly and we were gone; but within a few seconds I saw the rays of a searchlight shining down from above and moving searchingly to and fro through the air.

"A patrol boat!" shouted Gor Hajus in my ear. Hovan Du growled savagely and shook the chain upon his collar. We raced on, trusting to the big gods and the little gods and all our ancestors that the relentless eye of light would not find us out; but it did. Within a few seconds it fell full upon our deck from above and in front of us and there it clung as the patrol boat dropped rapidly towards us while it maintained a high rate of speed upon a course otherwise identical with ours. Then, to our consternation, the ship opened fire on us with explosive bullets. These projectiles contain a high explosive that is detonated by light rays when the opaque covering of the projectile is broken by impact with the target. It is therefore not at all necessary to make a direct hit for a shot to be effective. If the projectile strikes the ground or the deck of a vessel or any solid substance near its target, it does considerably more damage when fired at a group of men than if it strikes but one of them, since it will then explode if its outer shell is broken and kill or wound several; while if it enters the body of an individual the light rays cannot reach it and it accomplishes no more than a non-explosive bullet. Moonlight is not powerful enough to detonate this explosive and so projectiles fired at night, unless touched by the powerful rays of searchlights, detonate at sunrise the following morning, making a battlefield a most unsafe place at that time even though the contending forces are no longer there. Similarly they make the removal of the unexploded projectiles from the bodies of the wounded a most ticklish operation which may well result in the instant death of both the patient and the surgeon.

Dar Tarus, at the controls, turned the nose of our flier upward directly towards the patrol boat and at the same time shouted to us to concentrate our fire upon her propellers. For myself, I could see little but the blinding eye of the searchlight, and at that I fired with the strange weapon to which I had received my first introduction but a few hours since when it was presented to me by Mu Tel. To me that all searching eye represented the greatest menace that confronted us, and could we blind it the patrol boat would have no great advantage over us. So I kept my rifle straight upon it my finger on the button that controlled the fire, and prayed for a hit.

Gor Hajus knelt at my side, his weapon spitting bullets at the patrol boat. Dar Tarus' hands were busy with the controls and Hovan Du squatted in the bow and growled.

Suddenly Dar Tarus voiced an exclamation of alarm. "The controls are hit!" he shouted. "We can't alter our course-the ship is useless." Almost the same instant the searchlight was extinguished-one of my bullets evidently having found it. We were quite close to the enemy now and heard their shout of anger.

Our own craft, out of control, was running swiftly towards the other. It seemed that if there was not a collision we would pass directly beneath the keel of the air patrol. I asked Dar Tarus if our ship was beyond repair.

"We could repair it if we had time," he replied, "but it would take hours and while we were thus delayed the whole air patrol force of Toonol would be upon us."

"Then we must have another ship," I said. Dar Tarus laughed. "You are right, Vad Varo," he replied, "but where shall we find it?"

I pointed to the patrol boat. "We shall not have to look far."

Dar Tarus shrugged his shoulders. "Why not!" he exclaimed.