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Updated: June 12, 2025
Now if that letter were steamed open the tannin and the sulphate would come together, run, and leave a smudge. You see the blots? The inference is obvious." Clearly, then, our chase was getting warmer. Dawson had been in Atlantic City at least within a few days.
"You have enough tannin in you to pucker a mushroom. By the way, those big, corn-cobby fellows should spring up with the next warm rain, and the hotels and restaurants always pay high prices. I must gather a few bushels." He looked over the bed of beautiful wild alum and hesitated. "I vow I hate to touch you," he said. "You are a picture right now, and in a week you will be a miracle.
He reached down into his desk and pulled out another, sealed it carefully, dried it, then held it over a steaming pan of water until the gum was softened and it could be opened again. On the back were smudges just like those on the letter that had been returned. "On the thin line of gum on the flap of the envelope," he explained, "I have placed first a coating of tannin, over which is the gum.
They were well grouped, effective, making the direct appeal to an Anglo-Saxon populace, which in its art must have something to catch hold of, like the tannin in its overdrawn tea. He remembered the glowing pride with which he had regarded this achievement, the triumphal progress he made in a motor-car around the London hoardings the day after the poster had been pasted abroad.
The oak, which is the great laboratory of tannin, not only lays up stores of it in its bark and leaves, but its roots discharge into the ground enough of it to tan the rootlets of all plants that venture to put down their suction-hose into the same region, and their spongioles are so effectually closed by this process, that they can no longer perform their office, and the plant that bears them dies.
Substances in the colloid state are almost always, when combined with water, more or less viscous or gelatinous. The most prominent examples of the state are certain animal and vegetable substances, particularly gelatine, albumen, starch, the gums, caramel, tannin, and some others.
When a man set out to build a tannery, he used to go into the woods where he could be sure of enough oak trees to supply him for many years with the bark from which tannin is made; but it has been found that the bark of several other kinds of trees, such as larch, chestnut, spruce, pine, and hemlock, will tan as well as that of oak.
On the pavement may probably be seen some wight who with more than political obstinacy, resolves to "weather the storm," with slouched hat, which acts upon the principle of capillary attraction, drenched coat, and boots in which the feet work like pistons in tannin: now The reeling clouds, Stagger with dizzy poise, as doubting yet, Which master to obey.
On account of the tannin these beverages tend to retard digestion and to irritate the lining of the stomach—effects that may be largely obviated by methods of preparing tea and coffee which dissolve little of the tannin. In chemical composition caffeine closely resembles a waste, called uric acid, and in the body is converted into this substance.
Freydisa lifted the cloak, and there lay the Wanderer as he had been placed a thousand or more of years before our time, as perfect as he had been in the hour of his death, for the tannin from the new-felled tree in which he was buried had preserved him. Breathless with wonder, we bent down and examined him by the light of the lamps.
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