And yet maybe it is not hotter than the barometric pressure and the confined space might account for. Of course, the ventilation is awful. We pump the air down, but two-hour shifts are the most the men can do – and they are willing lads too. The Professor was down yesterday, and he was very pleased with it all. You had best join us at lunch, and then you will see it for yourself.'

After a hurried and frugal meal we were introduced with loving assiduity upon the part of the manager to the contents of his engine-house, and to the miscellaneous scrapheap of disused implements with which the grass was littered. On one side was a huge dismantled Arrol hydraulic shovel, with which the first excavations had been rapidly made. Beside it was a great engine which worked a continuous steel rope on which the skips were fastened which drew up the debris by successive stages from the bottom of the shaft. In the power-house were several Escher Wyss turbines of great horse-power running at one hundred and forty revolutions a minute and governing hydraulic accumulators which evolved a pressure of fourteen hundred pounds per square inch, passing in three-inch pipes down the shaft and operating four rock drills with hollow cutters of the Brandt type. Abutting upon the engine-house was the electric house supplying power for a very large lighting instalment, and next to that again was an extra turbine of two hundred horse-power, which drove a ten-foot fan forcing air down a twelve-inch pipe to the bottom of the workings. All these wonders were shown with many technical explanations by their proud operator, who was well on his way to boring me stiff, as I may in turn have done my reader. There came a welcome interruption, however, when I heard the roar of wheels and rejoiced to see my Leyland three-tonner come rolling and heaving over the grass, heaped up with tools and sections of tubing, and bearing my foreman, Peters, and a very grimy assistant in front. The two of them set to work at once to unload my stuff and to carry it in. Leaving them at their work, the manager, with Malone and myself, approached the shaft.

It was a wondrous place, on a very much larger scale than I had imagined. The spoil banks, which represented the thousands of tons removed, had been built up into a great horseshoe around it, which now made a considerable hill. In the concavity of this horseshoe, composed of chalk, clay, coal, and granite, there rose up a bristle of iron pillars and wheels from which the pumps and the lifts were operated. They connected with the brick power building which filled up the gap in the horseshoe. Beyond it lay the open mouth of the shaft, a huge yawning pit, some thirty or forty feet in diameter, lined and topped with brick and cement. As I craned my neck over the side and gazed down into the dreadful abyss, which I had been assured was eight miles deep, my brain reeled at the thought of what it represented. The sunlight struck the mouth of it diagonally, and I could only see some hundreds of yards of dirty white chalk, bricked here and there where the surface had seemed unstable. Even as I looked, however, I saw, far, far down in the darkness, a tiny speck of light, the smallest possible dot, but clear and steady against the inky background.

'What is that light?' I asked.

Malone bent over the parapet beside me.

'That's one of the cages coming up,' said he. 'Rather wonderful, is it not? That is a mile or more from us, and that little gleam is a powerful arc lamp. It travels quickly, and will be here in a few minutes.'

Sure enough the pin-point of light came larger and larger, until it flooded the tube with its silvery radiance, and I had to turn away my eyes from its blinding glare. A moment later the iron cage clashed up to the landing stage, and four men crawled out of it and passed on to the entrance.

'Nearly all in,' said Malone. 'It is no joke to do a two-hour shift at that depth. Well, some of your stuff is ready to hand here. I suppose the best thing we can do is to go down. Then you will be able to judge the situation for yourself.'

There was an annexe to the engine-house into which he led me. A number of baggy suits of the lightest tussore material were hanging from the wall. Following Malone's example I took off every stitch of my clothes, and put on one of these suits, together with a pair of rubber-soled slippers. Malone finished before I did and left the dressing-room.