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Updated: June 13, 2025
He showed them, by his actions, that he knew how much the plumbago had grown on the trellis, how long the shoots were that had been made on the layer, and his fingers ran from one mazy cluster of buds and flowers to another; hard-wooded shrubby stems were examined for scale, which was carefully removed; and every now and then he paused and placed his hands on the exact place to raise up some fragrant plant lemon verbena or heliotrope to inhale its sweet odour and replace it with a sigh of satisfaction.
Er de plumbago or de typhoid er de yaller fever sometimes. But I warns ye now ter flee de wrath dat's ter come when dem Divers git ye! Dey ain't no doctor no good fer dat nowhar exceptin' ye come ter de Lord. For He heal 'em er all sorts er diseases an' de wust er all de complaints called de Divers! "Come, humble sinners, in whose breast er thousand thoughts revolve!"
This aggregate, we are told, will soon be largely increased by adopting American and European machinery in mining the crude article. Some of these mines have reached a depth of six and seven hundred feet. Plumbago mining may not present the charm which attaches to the digging for rubies and sapphires, but in the long run the cash results are far more satisfactory.
The sensible amateur gardener, then, will not attempt to fight with Nature but will fall in with her views. What more pleasant than to get out of bed at 11.30 on a Sunday morning; to look out of your window at a lawn waving with the feathery plumes of Parramatta grass, and to see beyond it the churchyard geranium flourishing side by side with the plumbago and the Port Jackson fig?
What the action is which transforms plumbago or some other form of carbon into the condition of a diamond cannot be stated. Diamond is the purest form of carbon found in nature. It is a beautiful object, alike from the results of its powers of refraction, as also from the form into which its carbon has been crystallised.
Lepidodendron. There is but one more form of carbon with which we have to deal in running through the series. We have seen that coal is not the summum bonum of the series. Other transformations take place after the stage of coal is reached, which, by the continued disentanglement of gases, finally bring about the plumbago stage.
Besides precious stones, Ceylon produces gold, quicksilver, plumbago of the finest quality, and magnetic iron ore. Plumbago has at various times formed quite an item in the exports of the island. The supply of this article in the neighborhood of Ratnapura is practically inexhaustible. It is found in large, detached masses of fine quality, five or six feet below the surface of the ground.
According as the main line current was strong or weak, the pressure on the plumbago was more or less, and the current in the local circuit strong or weak. Hence the signals of the local receiver were in accordance with the currents in the main line.
Plumbago-marks, if not removed by rubbing, are even more durable than ink; because plumbago is an organic, insoluble substance, not subject to the chemical changes which moisture, the atmosphere, and fluids accidentally spilled, and solvents purposely applied, make in the various kinds of ink which are known to us.
If they sometimes descend towards the sea-coast, it is only under cover of a thick shade. The old trunks of the cyathea and the meniscium are covered with a carbonaceous powder, which, probably being deprived of hydrogen, has a metallic lustre like plumbago.
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