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Updated: June 13, 2025
I sat still, smoking away dreamily, but with a weather eye on him. He stood over me, rolled up his sleeves and contemplated me, then he turned and shouted to his man: "Hi, Plumbago! Come on and lend a hand with this cargo. No use wasting any time on this tom-fool injun." To say I was surprised, was to put it mildly, for I was sure a quarrel was about to be precipitated.
Below this are the plumbago and clay slates of Punkabaree, which alternate with beds of mica-schist with garnets, and appear to repose immediately upon the carboniferous strata and sandstone; but there is much disturbance at the junction.
The cylinder of the engine assuming that it has only a single-acting one, placed with its axis vertical consists of two parts; the upper hot part being lined with plumbago, fire-clay, or other refractory material, and the lower part kept cool by a water casing.
The flower is not strikingly beautiful nor ravishingly scented, but it flowers nine months out of the year; smothered with street dust and scorched by the summer sun, you will find that faithful old plumbago plugging along undismayed. A plant like this should be encouraged but the misguided amateur gardener as a rule despises it.
We can scarcely, therefore, expect that the vegetable world had made any great advance in complexity of organism at this time, otherwise the supplies of graphite or plumbago which are found in the formation, would be attributed to dense forest growths, acted upon, after death, in a similar manner to that which awaited the vegetation which, ages after, went to form beds of coal.
On the other hand, the island sends to Europe and America annually $21,000,000 worth of tea, besides considerable quantities of rubber, cocoanut-oil, cacao, and plumbago. Ceylon's crude rubber commands the highest price, and is a crop growing by leaps and bounds. It is estimated that eight hundred million cocoanuts are grown yearly in Ceylon. An item in the list of exports is elephants.
Lead abounds on the Sananoqui river, and at Clinton, in the Niagara district; whilst plumbago, now so useful, is abundant throughout the line, where the primary and secondary rocks intersect each other. Mr.
In a speaking-telegraph transmitter, the combination of a metallic diaphragm and disk of plumbago or equivalent material, the contiguous faces of said disk and diaphragm being in contact, substantially as described.
At the distance of 30 miles from the plumbago, there occurs, on the borders of Rhode Island, an impure anthracite in slates containing impressions of coal-plants of the genera Pecopteris, Neuropteris, Calamites, etc.
The anthracite and plumbago associated with hypogene rocks may have been coal; for not only is coal converted into anthracite in the vicinity of some trap dikes, but we have seen that a like change has taken place generally even far from the contact of igneous rocks, in the disturbed region of the Appalachians.
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