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Updated: May 9, 2025
If the lower part of the stem is irritated, the phosphorescence passes gradually upwards along each pair of branches in succession; but if the top is irritated the phosphorescence will pass in the same way downwards.
The other circumstances appeared to be due to the decay of the ancient city, to the decomposition of accumulated matter, to phosphorescence and gaseous exhalations. The black rocks that crumbled at a touch were doubtless the remains of ancient buildings saturated with the dark water and vapours. Inland similar remains were white, and resembled salt.
If it is desired to produce phosphorescence, the bulb should be larger, else it would be apt to get too hot, and the phosphorescence would cease. In this arrangement usually only the small bulb shows phosphorescence, as there is practically no bombardment against the outer globe.
For making observations the operator has simply to turn on the current of electricity and apply the screen to his eyes, pointing it towards the glowing tube, when the shadow of any substance interposed between the tube and the screen will appear upon the phosphorescence plate.
Across the north was a dim glow of phosphorescence, precursor of the aurora, from which occasionally trembled for an instant a single shaft of light. The group by the bronze field-cannon were humming softly the sweet and tender cadences of La Violette dandine. Instinctively the two woodsmen paused on the hither side of rejoining their companions.
Such is nearly all the structure that can be discerned with the aid of the microscope in this simple organism. Nevertheless, this lowly form is the chief cause of that diffused phosphorescence which is sometimes seen over a wide extent of the ocean. How innumerable the individuals belonging to this species must therefore be, may be left to the imagination.
I caught her with the oars barely in time to save her, and turned her again head to the sea, keeping a watchful eye to windward. Then baling out the seat-room, I took some crackers and a draught of water, and turned the boat stern foremost to the sea. It was, by guess, about nine o'clock; and there was no light except the phosphorescence of the water.
A vacuum bulb connected between the discharge terminals of the high frequency coil, as shown in figure 101, was illuminated with a pink glow, which streamed from the negative to the positive pole that is to say, the cathode to the anode, and the glass became luminous with bluish phosphorescence and greenish fluorescence.
Across the bottom of the letter was written in English: "The kid disappeared from the leper settlement. They think he drowned himself." Thirty-seven days at sea; life of the sea-birds; strange phosphorescence; first sight of Fatu-hiva; history of the islands; chant of the Raiateans. Thirty-seven days at sea brought us to the eve of our landing in Hiva-oa in the Marquesas.
To add to our difficulties, it was so intensely dark that we could not see where we were; true, the water all round us was ablaze with phosphorescence, which enabled us to discern that land of some sort lay about a couple of cables' lengths to leeward of us, but it was quite indistinguishable, and the water between us and it was leaping and spouting so furiously that I did not feel justified in making any attempt to get the men ashore, especially as we were then being swept so heavily that we had all our work cut out to hold on for our lives.
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