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Clear out," growled Kennedy. They retreated precipitately, and Craig hastily opened his bag of tools. "Quick, Walter, shut the door and hold it," exclaimed Craig, working rapidly. He unwrapped a little package and took out a round, flat disc-like thing of black vulcanised rubber. Jumping up on a table, he fixed it to the top of the reflector over the gas-jet.
And yet, to be an ideal rider, man wants but little here below, nor is it at all likely he will want that little long. He wants or rather, needs a skull of best spring steel; a spinal column of standard Lowmoor; limbs of gutta-percha; a hide of vulcanised india-rubber; and the less brains he has, the better.
If the muscles on either side do not come into apposition, but leave a cleft between them, the infant should constantly wear a broad bandage of fine flannel round the stomach, not applied too tightly, in order to give support. The circular bandages of vulcanised india-rubber with a pad in the centre are nowise to be recommended.
Some bodies, such as flesh, paper, wood, ebonite, or vulcanised fibre, thin sheets of metal, and so on, are more or less transparent, and others, such as bones, carbon, quartz, thick plates of metal, are more or less opaque to the rays. The human hand, for example, consisting of flesh and bones, allows the rays to pass easily through the flesh, but not through the bones.
I shall break the amber stem, sooner or later, but I shall have it replaced by one of vulcanised rubber, and shall continue to cherish the gift though mutatus ab illo. If you don't mind, I 'll initiate it now, without waiting for Christmas day." He suited the action to the words and leaned back in his chair, puffing.
In London and in large towns there are various contrivances of vulcanised rubber, which are, of course, far preferable to the bladders, but it is not everyone who lives in London, or who can command the resources furnished by a large city.
Immediately under the bulb was placed my naked hand resting on a photographic slide containing a sensitive bromide plate covered with a plate of vulcanised fibre. An exposure of five or ten minutes is sufficient to give a good picture of the bones, as will be seen from the frontispiece. The term "shadow" photograph requires a word of explanation.
It proved to be a huge reflector in front of which was placed a little arrangement which, under the light of a shaded lantern carried by Herndon, looked like a coil of wire of some kind. To the back of the reflector Craig attached two other flexible wires which led to a couple of dry cells and a cylinder with a broadened end, made of vulcanised rubber.
"How did you get your first hint?" he gasped. Kennedy was digging into the wall with a bill file at the place where he had buried the little vulcanised disc. I had already guessed that it was a dictograph, though I could not tell how it was used or who used it. There it was, set squarely in the plaster. There also were the wires running under the carpet.
"How did you get your first hint?" he gasped. Kennedy was digging into the wall with a bill file at the place where he had buried the little vulcanised disc. I had already guessed that it was a dictograph, though I could not tell how it was used or who used it. There it was, set squarely in the plaster. There also were the wires running under the carpet.
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