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Updated: June 14, 2025
The depth to which puddle trenches have been carried, for the purpose of penetrating water-bearing strata, and reaching impenetrable ground, in some cases, has been as much as 160 ft. below the natural surface of the ground, and the expense of timbering, pumping, and excavation in such an instance can be easily imagined.
I may, perhaps, be permitted to mention that some few years ago I devised for a tunnel through the water-bearing chalk a mode of excavation by the use of compressed air to hold back the water, and combined with the employment of a tunneling machine. This work, I regret to say, was not carried out.
March through a hilly country covered with dwarf forest to Kandé's village, still on the Lokuzhwa. We made some westing. The village was surrounded by a dense hedge of bamboo and a species of bushy fig that loves edges of water-bearing streams: it is not found where the moisture is not perennial.
When we drive a drain through a spring and into the water-bearing stratum which feeds it, we simply make it easier for the water to escape by the drain than to keep on at the higher level, and break out at the surface of the ground. What constitutes a sufficient drain is something very much less than what is generally supposed.
But I fancy that these roots only hold water after rain, and that when they are water-bearing, pools also are to be found in the creeks. Numerous emu and turkey tracks led up the watercourse, but, though seeing several emu, we were unable to get a shot. Following the creek upwards, for near the head one is likely to find rocky pools, we soon came on a nice waterhole and made camp.
"The tone of the message quite conveyed that the distance from her down to me was as great as in fact it is the other way. However, I thought it worth the trouble to see this supercilious water-bearing girl, and I went into a low room it makes me sick now to remember how it smelt of poverty and there she sat with an idiotic child, dying on her lap.
When water-bearing strata have been buried to the depth of ten miles, the temperature of the mass may be expected to rise to somewhere between seven hundred and a thousand degrees Fahrenheit. If the depth attained should be fifty miles, it is likely that the temperature will be five times as great.
I have seen it "from the centre of the sea" as far west as Streaky Bay, and believe I have seen it further West still. Considering the great similarity of much of the flora of South Africa to that of Australia, it is probable that some species of the water-bearing Hakea might be found there.
"The tone of the message quite conveyed that the distance from her down to me was as great as in fact it is the other way. However, I thought it worth the trouble to see this supercilious water-bearing girl, and I went into a low room it makes me sick now to remember how it smelt of poverty and there she sat with an idiotic child, dying on her lap.
It is not yet known to what depth the water-bearing section of the earth extends; but, as we shall see more particularly hereafter when we come to consider volcanoes, the lavas which they send up to the surface are full of contained water, which passes from them in the form of steam.
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