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He could almost picture the stream of boron hydride blending with the oxidizer and flowing in an ever-increasing stream toward the combustion chamber. He heard the scrape as the instrument cable dropped away outside. Pegasus roared! And Rick knew. He knew that somehow he had failed, that the board showed green! Weight, One Ton Rick had no time to think. He reacted.

Chlorine, iodine, bromine, and fluorine thus formed a very distinct group; sulphur and selenium another; boron and silicon another; potassium, sodium, and lithium another; and so on. In some cases, the atomic weights of such allied bodies were nearly the same, or could be arranged in series, with like differences between the several terms.

And so it happened that the spacemen of the SCN Scorpius turned their valves, threw their controls and disengaged their boron control rods, and the great cruiser flashed into space, while the deputy commander and the safety officer were completely tangled with a very flustered and unhappy new Planeteer lieutenant. Sergeant-major Koa and his men had made it before the valve closed.

John Gordon motioned to Dr. Albert Hiller, the Orion project officer. Hiller nodded. He spoke quietly, but not one of the hundreds watching missed a single word. "Apparently a fuel-pump bearing froze at the critical moment. With an unstable fuel like boron hydride, that made the difference. Internal pressure was too much for the shell to take."

Then came the little dinies. Some were as small as two inches in length. Some were larger. All were cute. Colonists' children wanted to make pets of them until it was discovered that miniature they might be, but harmless they were not. Tiny diny-teeth, smaller than the heads of pins, were still authentic boron carbide.

The religious signification of the Grail is supposed to have been attached to it early in the thirteenth century by Robert de Boron; and, perhaps a little later, in the French prose "Quest of the Holy Grail," Galahad takes the place of Perceval as the hero of the story. The later history of the various versions of the legend is highly intricate, and in many points uncertain.

When they gathered sluggishly about a ground-car and began to lunch on it, the colonists did not believe. But it was true. The dinies' teeth weren't mere calcium phosphate, like other beasts. An amateur chemist found out that they were an organically deposited boron carbide, which is harder than any other substance but crystallized carbon diamond.

A device for sealing together the inside part and bulb of an incandescent lamp mechanically. Regulators for dynamos and motors. Three devices for utilizing vibrations beyond the ultra violet. A great variety of methods for coating incandescent lamp filaments with silicon, titanium, chromium, osmium, boron, etc. Several methods of making porous filaments.

Experiments already made so that aluminum, silicon, boron, manganese, magnesium, sodium and potassium can be reduced from their oxides with ease. In fact, there is no oxide that can withstand temperatures attainable in this electrical furnace. Charcoal is changed to graphite. Does this indicate fusion or solution of carbon?

It is not right, then, to condemn these modes of speech, and ridicule the poet for using them, as some have done; e.g. the elder Euclid, who said it was easy to make poetry if one were to be allowed to lengthen the words in the statement itself as much as one likes a procedure he caricatured by reading 'Epixarhon eidon Marathonade Badi gonta, and ouk han g' eramenos ton ekeinou helle boron as verses.