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When the fire died down the air contracted, the water was siphoned back from the bucket, which, being thus lightened, let the doors close again through the action of an ordinary weight. The other method was a slight modification, in which the retort of water was dispensed with and a leather sack like a large football substitued.
When the water rises nearly to the top of the tank it is siphoned into another tank, and from there it is piped about the field. The piping is very simple ordinary drain tile conveys the water. From this main trunk should be branch lines of "laterals," laid from eight to twelve feet apart, as they would be laid for draining a field.
The solution is allowed to settle for some time, the clear liquid siphoned off, concentrated to one-third its volume and acetic acid added in slight excess. It is then concentrated to a sirup, and a large excess of 95 per cent. alcohol added to it.
He swirled first one of them violently in the clear water of the bathtub. Then, he siphoned off the water. The water was then subjected to a careful filtering process. The solids resulting from this were subjected to the microscope. This was done in turn with each section of the coil of rope and twine that Brasher brought. Toward the end of his examination, Professor Brierly had Matthews' help.
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