"His name shall be alterd," quoth William Stutely,

fearedand with reason -that on one of these occasions it would pull round the tail of the tractor after it and topple the tractor on its side, or, worse, drag it into a crevasse: so they had unhooked the tow-bar and left the sled. It was surprising that they hadn't done this earlier: apart from carrying their fuel and food, which reserves could easily have gone into the tractor cabin itself, it had been a useless encumbrance to them. As far as I could judge they had abandoned it with all its contents-apart, of course, from the portable radio-including the wraps we had given Zagero and Levin when they had ridden on it at the point of a gun. We took these, tucked them round Mahler and Marie LeGarde and passed on. Three hundred yards later I stopped so abruptly, that the sledge, bumping into me, made me lose my footing on the slippery ice. I stood up, laughing softly, laughing for the first time for days, and Zagero came up close and peered into my face. "What gives, Doc?" I laughed again and was just on the point of speaking when his hand struck me sharply across the face. "Cut it out, Doc." His voice was harsh. "That ain't goin' to help us any." "On the contrary, it's going to help us a very great deal." I rubbed a hand across my cheek, I couldn't blame him for what he had done. "My God, and I almost missed it!" "Missed what?" He still wasn't sure that I wasn't hysterical. "Come on back to the tractor sled and see. Smallwood claims he thinks of everything, but he's missed out at last. He's made his first big mistake, but oh, brother, what a mistake! And the weather's just perfect for it!" I turned on my heel and actually ran up the glacier towards the sled. Many items were carried as standard equipment in ICY parties, both in the field and at base camps, and none more standard than the magnesium flares which first came into common use in the Antarctic over a quarter of a century agothey are indispensable as location beacons in the long polar nightsand radiosondes. We carried more radio-sondes than any other item of equipment, for our primary purpose on the ice-capthe garnering of information about density, pressure, temperature, humidity and wind direction of the upper atmospherewas impossible without them. These sondes, still crated with the tents, ropes, axes and shovels which we had found no occasion to use on this trip, were radio-carrying balloons which wirelessed back information from heights of between 100,000 and digital camera brands sony cameras 150,000 feet. We also carried rockoons, radio rockets fired from balloons which took them clear of the denser parts of the atmosphere before releasing them. But right then rockoons were useless to me. So, too, were balloons at their normal operating height: 5000 feet should serve our purpose admirably. The dim glow from the torch was more than sufficient, Jackstraw and I had worked with these things a hundred times. To couple the balloon to the hydrogen cylinder, disconnect the radio and substitute a group of three magnesium flares fused with RDX took only minutes. We lit the fuse, cut the holding cord and had a second balloon coupled on to the cylinder before the first was 500 feet up. Then, just as we had the third on the cylinder and were disconnecting its radio, the first flare, now at about a height of 4000 feet, burst into scintillating brilliant life. It was all I could have wished for, indeed it was more than I'd ever hoped for, and Zagero's heavy thump on my back showed how joyfully he shared my feelings. "Dr Mason," he said solemnly, "I take it all back, all I ever said about you. This, Dr Mason, is genius." "It's not bad," I admitted, and indeed if anyone, in those perfect conditions of visibility, couldn't see the coruscating dazzlement of those flares at any distance up to thirty miles, he would have to be blind. If they were looking in the right direction, that was, but I was sure that with Hillcrest carrying five men and everybody almost certainly on the lookout for us, the chances of missing it were remote. The second flare, considerably higher, burst into life just as the first went sputtering into extinction and the further thought struck me that if there were any ships patrolling out in the sea beyond, it would give them a bearing the significance of which none of them could surely overlook. And then I saw Jackstraw and Zagero looking at me and though I couldn't read their expressions in the darkness I knew from their stillness what they were both thinking and suddenly I didn't feel so happy any more. The odds were high that Corazzini and Smallwoodthey could be no more than a few miles distanthad seen the flares also. They would know what it signified, they would know it was the first tug on the drawstring of the net that might even then be starting to close round them. In addition to being dangerous, ruthless killers, they would become frightened killers; and they had Margaret and Johnny