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"Quick, Jack; grab that wireless upright forward!" commanded the young lieutenant. With alacrity Jack flung himself upon the steel aerial and wrenched it loose. It was a long tubing very much like an ordinary length of gas pipe set up usually forward as one of the wireless supports, and folding down into the deck plates when the Dewey was stripped for undersea navigation.
Some tubing has occasional knots or lumps of unfused material. The rest of the tube is usually all right, but often the defective part must be cut out. The presence of striations running along the tube is generally an indication of hard, inferior glass. Crookedness and non-uniformity of diameter are troublesome only when long pieces must be used.
There was beginning to be a good demand for ground-up rubber car springs, wringer rolls, tubing and other rubber goods free from fiber, after it had been so treated as to remove the sulphur contents and restore the gum to a workable condition. But this left out of account rubber footwear, belting, and hose, not to mention the later heavy production of bicycle tires.
Instead of removing the tail, the bulb must be blown in this case with both pieces of tubing attached, and care must be taken that they "line up" properly, i.e., are in the same straight line, and that this line passes as near as may be through the center of the bulb.
Screw the wooden parts of the sockets to the front. Four little "distance pieces" should now be cut out of small tubing, or made by twisting tin round the spindle, to place on the spindles between shutter and sockets, so that the shutters cannot shift sideways. Flatten out the end with a hammer, and drill a small hole near the tip.
=Bending Glass.= Inasmuch as this is one of the commonest operations in the laboratory, it is assumed that the reader knows how to perform it. If large tubing is to be bent, one end must be stoppered and great care used. Whenever the tube shows signs of collapsing or becoming deformed, it must be gently blown out into shape, heating the desired spot locally if necessary.
When the gas vein was unexpectedly tapped late in the afternoon, the drill pipes had been blown out and the escaping gas, igniting from the near-by boiler, had consumed the derrick. Fortunately, the tubing and drills had been forced through the derrick and were saved. The engine house had also caught fire, but this had been pulled down and it was thought that the engine and boiler were undamaged.
The tubing is now rotated rapidly about its axis, and lowered so that the flame is just tangent to its lower side. After about ten seconds of heating, it is removed from the flame and the hot portion quickly breathed upon, when it will generally crack apart very nicely.
The west front of the Cathedral, for instance, has been temporarily ruined by the restoration of the little marble shafts, which now merely look like a quantity of india-rubber tubing, let in in pieces. The choir of the Cathedral, again, is an outrage.
Then the gasoline engines began to snort, great lengths of tubing were let down into the shaft, and spurting water started down the mountain side as the task of unwatering the shaft began. But it was a slow job. Morning found the distance to the water lengthened by twenty or thirty feet, and the bucket brigades nearly at the end of their ropes.
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