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Beryllium had been taken, but whether there was any significance in the thefts or not, no one knew. There was a pattern in the thefts, nonetheless. They had begun small and increased. Scientific and technical instruments oscilloscopes, X-ray generators, radar equipment, maser sets, dynostatic crystals, thermolight resonators, and so on were stolen complete or gutted for various parts.
Secondly: the most usual bed on the clay-slate is a coarse, white, slightly calcareous conglomerate, of no great thickness, including broken crystals of feldspar, grains of quartz, and numerous pebbles of brecciated claystone porphyry, but without any pebbles of the underlying clay-slate.
But here within the precincts of the dwelling of the eternal Master a solemn silence reigned; only the cold north wind shook the branches of the yew, causing them to send forth a melancholy sigh into the night, and to shed a shower of tiny crystals of snow like the frozen tears of the dead.
The priest smoked cigarette after cigarette while my companion fitted another pair of crystals and tucked the dangerous ones away in his own case for the next victim. He did not even venture to haggle, but paid the two dollars demanded with the alacrity of a man who recognizes his good fortune, and to whom a matter of a few pesos more or less is of slight importance.
Before the lead begins to crystallize, the upper pot is charged with lead of half the richness of that in the lower pot. Thus, when the liquid lead has been tapped out of the lower pot, it is replaced by a similar amount of lead of the same richness as the remaining crystals, by simply tapping the upper or melting pot, and allowing the contents to run among the crystals.
Professor Cleaveland, who was one of the best authorities of his day, maintained nearly half a century ago that emeralds which exhibited a lively and beautiful green hue were found in blasting a canal through a ledge of graphic granite in the town of Topsham in Maine. Several of the crystals presented so pure, uniform and rich a green that he ventured to pronounce them precious emeralds.
Crystals, as we have seen, grow merely by external increment; but organisms grow by an increment which takes place in the very innermost substance of the tissues which compose their bodies, and the innermost substance of the cells which compose such tissues; this peculiar form of growth is termed intussusception.
White at the junction of the Ellalong, and we proceeded together, down the valley of the Wollombi. The most conspicuous of these headlands, as they appear from that of Mattawee behind the village of Broke, is called Wambo. This consists of a dark mottled trap with crystals of felspar.
Most commonly these principal directions are very near to the principal corresponding directions of optical elasticity. 6. In various crystals the characters of the absorption phenomena differ strikingly from those which we might expect to find after an examination of the optical properties of the crystal.
It partly dissolves in acid without gelatinizing, leaving a flaky residue; it is a beautiful mineral when in masses or crystals of a dark green color, but the best place in the vicinity to secure specimens of this kind is, as I will detail hereafter, at Paterson, N. J. Iron and Copper Pyrites.