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He reports as follows: "The reduction of organic matter in solution is the crucial test of the value of a purifying agent, for unless the organic matter is reduced, the effluent will putrefy and rapidly become offensive. "I have not observed in any of the unfiltered effluents from this process which I have examined any signs of putrefaction, but, on the contrary, a tendency to oxidize.

It reached maximum altitude and hesitated briefly. One side of the rocket was brilliant with sunlight raw, unfiltered light not meant for human eyes. The other side was black. On the sunny side, the rocket was heating from absorbed solar energy. On the dark side, the heat was radiating off. But the radiation was less than the absorption of energy, and the rocket was growing appreciably warmer.

Every little while a wave would beat against the cheek as though a furnace door had been opened. Nevertheless Kingozi knew that this was also the hour when the sun's power begins to decline; when the vertical rays begin to give place. For it is not heat that kills, but the actinic power of rays unfiltered by a long slant through the earth's atmosphere.

"I had no idea," he remarked plaintively, "that your mother was capable of such crudities. If I had known, I certainly would not have trusted myself to such a party. This sea air is hateful. It has tarnished my cigarette-case already, and one's nails will not be fit to be seen. To be out of doors like this is worse than drinking unfiltered water."

Much of the sickness in the army was probably due to the men recklessly drinking unboiled and unfiltered Nile water. At that season the river had sunk into its narrowest bed, and there were backwashes and sluggish channels full of light-green tinted water. More filters were procured, and extra care was taken with all the water used for domestic purposes.

It was raw sunlight, unfiltered by the atmosphere. It was sunlight no human had ever seen before. Even in his semiconscious state Rick realized the danger and managed to shut his eyes. The sunlight seemed to burn through the lids, to scorch the insides of his head.

The miasm in the latter case is therefore endoecic, or more exactly entoichic. With us the propagation of intermittent fever has been observed in persons occupying rooms scoured with unfiltered water containing the Limnophysalis hyalina in great quantity. The following imperial ordinance was published on the 25th of March, 1877, by the chief of admiralty of the German marine.

Nor was it a mere hole to the world beyond. Through one of the many wonders of Nature, a vein of crystalline quartz interceded, allowing the sun's light to pass, while gathering and holding a fair measure of its warmth. All these things he observed in the time it took for his eyes to adjust to what seemed a blinding glare, though in reality it was many shades lighter than the unfiltered sunlight.

The only unfiltered screen aboard the Nemesis was the one tuned to the falling missile. The city of Eglonsby rushed upward in it, and then it went suddenly dark. There was an orange-yellow blaze in the other screens. After a while, the filters went off and the telescopic screen went on again. He picked up the phone. "Space Vikings calling Eglonsby; this is your last warning. Communicate at once."

But the bottom becomes covered with the suspended matter deposited from the unfiltered water, and probably a considerable number of the minute entomostraca beloved of all fish breed in this. The Barnes reservoirs do contain a growth of weed, which is carefully removed every year.