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Updated: September 4, 2025
If I turn the tube in the opposite direction, the crowd immediately shifts its quarters and collects at the other end. The brilliant sunlight is its great joy. With this bait, I can send it whithersoever I please. We will therefore place the new receptacle, jar or test-tube, on the table, pointing the closed end towards the window. At its mouth, we open one of the full tubes.
To have it in a test-tube, indeed to possess it in large quantities in bottles, to be able to manipulate and examine it without fear of the co-action of admixed impurities, to see it with the eye, and to taste it with the tongue, was truly a marvel. The miracle aroused at once scores of researches.
Whether it was a question of history or of cosmogony, or whether he was handling a test-tube or a blow-pipe; what he was about I did not feel sure; but I took it for granted that it was some crucial question or other he was at work on, some point bearing on the thought of the time. For the Master, I have observed, is pretty sagacious in striking for the points where his work will be like to tell.
A delicate test for the acid, free or in combination, is to dissolve in the suspected fluid some crystals of ferrous sulphate, and then to gently pour down the test-tube some strong sulphuric acid. Where the two liquids meet, if nitric acid be present, a reddish-brown ring will be formed. It turns the skin bright yellow, and does the same with woollen clothes, from the formation of picric acid.
With this isolation in separate cells no conflicts need be feared; no sudden bite of the mandibles, whether intentional or accidental. All the occupants enjoy the same rights of property, the same appetite, and the same strength. How does this communal feast terminate? Having first opened them, I place a number of peas which are found to be well peopled in a glass test-tube. I open others daily.
One must not confuse the two, and no doubt, when we begin to analyse the development of human thought, its heredity, its genesis and growth, we shall have a Shelley-culture in a test-tube, and we shall be able to isolate a Browning-germ: but we haven't got there yet." "In that case," I said, "I don't really see what was so wrong with my last essay."
And when their kindly patronage sometimes passed from the amusing to the insufferable, she would think how Karl, master of them all, took her so unreservedly into his mind and heart, cherishing her ideas and opinions as quite the most vital things in all the world, and sometimes that would help her to smile, and not infrequently it made her long to hurl a test-tube at the self-satisfied head of Mr.
On causing the mercury to rise into the space that it previously occupied, the vapors are made to condense in the second test-tube at the same temperature as that at which they were formed. We immediately ascertain that the pressure-gauge shows an elevation of pressure; moreover, the proof of the condensed alcohol has very perceptibly risen.
The enormously long nail of his right index finger rested upon the opened page of the book, to which he seemed constantly to refer, dividing his attention between the volume, the contents of the test-tube, and the progress of a second experiment, or possibly a part of the same, which was taking place upon another corner of the littered table.
The enormously long nail of his right index finger rested upon the opened page of the book to which he seemed constantly to refer, dividing his attention between the volume, the contents of the test-tube, and the progress of a second experiment, or possibly a part of the same, which was taking place upon another corner of the littered table.
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