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Updated: June 28, 2025
It had even stripped some of the threads of the bolts, and we could never find that cover. I concluded it was either leakage of gas into the manhole, or else the acid used in pickling the casting had given off hydrogen, and air had leaked in, making an explosive mixture.
The objection to leakage is twofold: sewage matters escaping into the soil might contaminate wells and springs; and it would also rob the flow through the pipes of water needed to carry forward the more solid contents.
The splinters and fragments of the shell had torn and mutilated in the most ghastly manner. I passed about two hundred while I was climbing up. There was, moreover, a small but steady leakage of unwounded men of all corps. Some of these cursed and swore. Others were utterly exhausted and fell on the hillside in stupor. Others again seemed drunk, though they had had no liquor.
On the other hand, the machine possessing its own oil tank, cooling chamber and pump is somewhat at a disadvantage in this respect, as a part of the system is necessarily hidden from view, and, further, it is not easily accessible. The leakage taking place in any system, if there be any, must, however, be detected and stopped.
If the material be so porous as to permit a considerable leakage of air through it, there will naturally result a continuous change of air in the working chamber, and a corresponding relief of the men from the deleterious effects which are nearly always produced by over-used air.
The object was, that should the puddle become fissured and leaky, the draught so created would carry with it particles of peat, which would choke up the cracks and so reduce the leakage that the alluvial matter would gradually settle over it and close it up.
Even pockets with flaps may allow of leakage. It is wise to tie your Rucksack firmly with a strap round your waist because, if it is loose, anything heavy inside may give you a nasty bump on the head as you fall. There are three British Ski tests under the Federal Council of British Ski Clubs.
There are three covered openings in the floor, which permit of a free circulation of air when the boat is not in use, and in one of these is a small pump to clear the ballast-space of leakage. It will be observed that the boat draws little water; in fact, there is much more of her above than below water, and she is dependent for stability on her great breadth of beam and her heavy keel.
There is a hole through the valve so as to conduct away any steam which may enter within the ring by leakage, and the ring is kept tight against the back of the casing by means of a ring situated beneath the bearing ring, provided with four lugs, through which bolts pass tapped into bosses on the back of the valve; and, by unscrewing these bolts, which may be done by means of a box key which passes through holes in the casing closed with screwed plugs, the lower ring is raised upwards, carrying the bearing ring before it.
Fencing made of stout galvanized iron wires strung on wooden posts supplies excellent conductors for practice purposes, provided the posts be quite dry. In wet weather there will be leakage. The length of the line will be limited by the battery power available, but a 6-volt battery at each end will probably suffice for all experimental purposes.
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