dge of the snow…bridge to her death； had taken the near…suicidal gamble of jumping after her to stop her。 Even in that moment I wondered if I would have had the courage to do the same myself。 I didn't think so。
〃Are you all right？〃 I shouted。
〃I think my left arm is broken；〃 Jackstraw said conversationally。 〃Would you please hurry； Dr Mason？ This bridge is rotten； and I can feel it going。〃
His arm broken and the bridge going…and； indeed； I could see chunks of ice and snow falling off from the underside of the arch on which he was standing！ The matter…of…fact lack of emotion of his voice was more pelling than the most urgent cry could possibly have been。 But for the moment I was in the grip of a blind panic that inhibited all feeling； all thought except the purely destructive。 Ropes…but Jackstraw couldn't tie a rope round himself； not with an arm gone； the girl couldn't help herself either； both of them were helpless； somebody would have to go down to them； and go at once。 Even as I stared into the crevasse； held in this strange motionless thrall； a large chunk of niv6 broke off from the side of the bridge and plummeted slowly down into the depths； to vanish from sight； perhaps two hundred feet below； long before we heard it strike the floor of the crevasse。
I jumped up and raced towards the tractor sled。 How to belay the man who was lowered？ With only eight or nine feet between the edge of the crevasse and the cliff behind； not more than three men could get behind a rope； and； with perhaps two men dangling at the end of it what possible purchase could those three find on that ice…hard snow to support them； far less pull them up？ They would be pulled over the edge themselves。 Spikes…drive a spike into the ground and anchor a rope to that。 But heaven only knew how long it would take to drive a spike into the icy surface with no guarantee at the end that the ice wouldn't crack and refuse to hold； and all the time that snow…bridge crumbling under the feet of the two people who were depending on me to save their lives。 The tractor； I thought desperately…perhaps the tractor。 That would take any weight： but by the time we'd disconnected the tractor sled； pushed it over the edge and slowly backed the tractor along that narrow and treacherous path； it would have been far too late。
I literally stumbled upon the answer…the four big wooden bridging battens sticking out from the end of the tractor sled。 God； I must have been crazy not to think of them straight away。 I grabbed a coil of nylon rope； hauled out one of the battens …Zagero was already beside me pulling at another…and ran back to the spot as fast as I could。 That three…inch thick； eleven…foot long batten must have weighed over a hundred pounds； but such is the supernormal strength given us in moments of desperate need that I brought it sweeping over and had it in position astride the crevasse； directly above Jackstraw and Helene； as quickly and surely as if I had been handling a half…inch plank。 Seconds later Zagero had laid the second batten alongside mine。 I stripped off fur gloves and mittens； tied a double bowline in the end of the nylon rope； slipped my legs through the two loops； made a quick half…hitch round my waist； shouted for another rope to be brought； moved out and tied my own rope to the middle of the planks； allowing for about twenty feet of slack； and lowered myself down hand over hand until I was standing beside Jackstraw and Helene。
I could feel the snow…bridge shake under my feet even as I touched it； but I'd no time to think about that； it would have been fatal if I had even begun to think about it。 Another rope came snaking down over the edge and in seconds I had it tied round Helene's waist so tightly that I could hear her gasp with the pain of it： but this was no time for taking chances。 And whoever held the other end of the rope up above was moving even as quickly as I was； for the rope tightened just as I finished tying the knot。
I learned later that Helene owed her life to Mahler's quick thinking。 The dog…sledge carrying Marie LeGarde and himself had stopped directly opposite the spot where Helene had gone over； and he had shouted to Brewster and Margaret Ross to sit on it and thread the rope through the slats on the sledge top。 It had been a chance； but one that came off： even on that slippery surface their bined weights were more than enough to hold the slightly built Helene。
It was then that I made my mistake…my second mistake of that afternoon； though I did not realise that at the time。 To help those above I stooped to boost her up； and as I straightened abruptly the suddenly increased pressure proved too much for the already crumbling bridge。 I heard the ominous rumble； felt the snow begin to give under my feet； released my hold on Helene…she was already well clear anyway…grabbed Jackstraw by the arm and jumped for the other side of the bridge a second before the spot where we had been standing vanished with a whroom and went cascading down into the gloomy depths of the crevasse。 At the full extent of my rope I hit the ice on the far side of the crevasse； wrapped both arms tightly round Jackstraw…I heard his muffled expression of pain and remembered his injury for the first time…and wondered how long I could hold him when that side of the bridge went too； as go it must； its support on the far side no longer existing。 But； miraculously； for the moment it held。
Both of us were pressed hard in against the ice； motionless； hardly daring to breathe； when I heard a sudden cry of pain from above。 It came from Helene…she must have caught her injured shoulder as she was being pulled over the edge of the crevasse。 But what caught my eye was not Helene； but Corazzini。 He was standing very close to the edge； and he had my gun in his hand。
I have never known such chagrin； such profound despair； such bitterness of spirit…or； to be utterly frank； such depths of fear。 The one thing I had guarded against all the time； the one thing I had dreaded above all other things； that Jackstraw and I should ever find ourselves； at the same time； pletely at the mercy of the killers； had e to pass。 But even in my fear there was savagery…savagery towards the man who had engineered this so beautifully； savagery towards myself for having been so easily and utterly fooled。
Even a child could see how it had been done。 The series of snow…bridges had given Corazzini the idea。 A little nudge to Helene Fleming at the right place…it was as plain as a pikestaff that it had been no accident…and it was a foregone conclusion that either Jackstraw or myself would have to go down to fix a rope round the youngster who； with her broken collar…bone； would be unable to do it herself： I suppose the possibility that she might have crashed straight through the snow…bridge must have occurred to Corazzini； but a man with a record of killings like he had wouldn't be worried unduly on that score…annoyance at the failure of his plan would probably have been his only reaction。 And when one of us had gone down and the other was supervising the rescue from above…well； another little nudge would have solved all Corazzini's problems。 As it was； I had played into his hands more pletely than he could ever have hoped。
Mouth dry； sweat breaking out in the palms of my clenched fists and my heart going like a trip…hammer in my chest； I was wondering desperately how he was going to administer the coup de grace when I saw the Rev。 Smallwood approaching him arms outstretched and saying something I couldn't catch。 It was a brave gesture of the little minister's； but a forlorn and hopeless one： I could see Corazzini change his gun to his left hand； strike Mr Smallwood a heavy backhanded blow across the face and the sound of a body falling on the ice above was unmistakable。 And then Corazzini was waving the others back at the point of the gun and was advancing towards the wooden battens that straddled the crevasse； and I knew with a dull certainty how he intended to dispose of us。 Why waste two bullets when all he had to do was to kick the edges of these battens over the side？ Whether these 。 battens； weighing two hundred pounds between them； struck us or smashed away the last remaining buttress of the snow…bridge was quite immaterial： the point was that I was inescapably attached to them by the nylon rope round my waist； and when they plummeted down I would go with them； tearing away the bridge and carrying Jackstraw with me to our deaths in the unthinkable depths below。
Despairingly； I considered the idea of snatching at the rifle still strapped to Jackstraw's back； but dismissed it even with the thought。 It would take me seconds to get it off。 There was only one thing for it； and it wasn't going to do me any good at all。 With a jump I could be half…way up the rope in a second； the increased weight would make the battens difficult to kick over； and while Corazzini was either pushing these or pumping bullets into me as I swarmed up the rope； somebody…Zagero； say； could get him from the rear。 That way there might； at least； be a faint chance for Jackstraw。 I swung my arms behind me； bent my knees then remained frozen in that ridiculous position