But there was no help to be got from hesitation, so with a rueful courage I set off. The place was if possible worse than I had feared. Wading up to the knees with nothing before you but a blank wall of mist and the cheerful consciousness that your next step may be your last--such was my state for one weary mile. The stream itself was high, and rose to my armpits, and once and again I only saved myself by a violent leap backwards from a pitiless green slough. But at last it was past, and I was once more on the solid ground of the hillside. Now, in the thick weather I had crossed the glen much lower down than in the morning, and the result was that the hill on which I stood was one of the giants which, with the Muneraw for centre, guard the watershed. Had I taken the proper way, the Nick o' the Threshes would have led me to the Caulds, and then once over the bog a little ridge was all that stood between me and the glen of Farawa. But instead I had come a wild cross-country road, and was now, though I did not know it, nearly as far from my destination as at the start. Well for me that I did not know, for I was wet and dispirited, and had I not fancied myself all but home, I should scarcely have had the energy to make this last ascent. But soon I found it was not the little ridge I had expected. I looked at my watch and saw that it was five o'clock. When, after the weariest climb, I lay on a piece of level ground which seemed the top, I was not surprised to find that it was now seven. The darkening must be at hand, and sure enough the mist seemed to be deepening into a greyish black. I began to grow desperate. Here was I on the summit of some infernal mountain, without any certainty where my road lay. I was lost with a vengeance, and at the thought I began to be acutely afraid. I took what seemed to me the way I had come, and began to descend steeply. Then something made me halt, and the next instant I was lying on my face trying painfully to retrace my steps. For I had found myself slipping, and before I could stop, my feet were dangling over a precipice with Heaven alone knows how many yards of sheer mist between me and the bottom. Then I tried keeping the ridge, and took that to the right, which I thought would bring me nearer home. It was no good trying to think out a direction, for in the fog my brain was running round, and I seemed to stand on a pin-point of space where the laws of the compass had ceased to hold.