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Updated: June 1, 2025
Unfortunately these acid zinc coatings are of a transitory nature, Their durability being incomparable with hot galvanizing, as the deposit is porous and retains some of the acid salts, which cause a wasting of the zinc, and consequently the rusting of the iron or steel.
On being held over the smoke this quickly dried, and became rather darker than at first. The process was repeated a dozen times, till the shoe was of sufficient thickness; care being taken to give a greater number of coatings to the sole. We found, after a little time, that the various operations required about five minutes, then the shoe was complete.
Just above this edifice stands a large octagonal tomb, surmounted by a dome, and richly adorned with arabesque cornices and coatings of green and blue tiles. It stood in a small garden inclosure, and there was a sort of porter's lodge at the entrance.
Had she eaten anything which had disagreed with her? Hadn't all the copper vessels new coatings of tin? He sent for the doctor. The doctor smiled and said it was all right. "What was all right? Oh! Nonsense! It wasn't possible. How could it have been possible? No, surely, the bed-room paper was to blame. It must contain arsenic. Let us send a piece to the chemist's at once and have it tested."
This induced my ingenious Elizabeth to make us a sort of blouse and hood out of old garments of the sailors, which we covered with coatings of the caoutchouc, and thus obtained two capital waterproof dresses; all that the exhausted state of our gum permitted us to make.
The mode of obtaining it is to make an incision in the bark, but not in the wood, and through it the milky sap exudes. A small peg Is then fixed in each hole to prevent its closing, and a cup or calabash secured underneath. When this is full, a number of them are carried to the camp, where the substance is spread in thin coatings upon moulds of clay, and dried layer after layer over a fire.
He plastered neither himself nor his trade with thick coatings of whitewash. He knew what he was, and faced the offensive title with perfect equanimity. He was a smuggler, probably the largest operator in the illicit traffic of opium smuggling, and the most successful importer of Chinese along the whole extent of the American border.
Time only can prove how far this mode of painting is to be compared, for durability, with that in oil; for the shrinking to which coatings of paint are subject depends in great measure upon the nature and seasoning of the wood.
The rough outside coatings of the bark, which are of silvery whiteness, but are ragged from exposure to the action of the weather in the larger and older trees, he peeled off, and then cutting the bark so that the sides lapped well over, and the corners were secured from cracks, he proceeded to pierce holes opposite to each other, and with some trouble managed to stitch them tightly together, by drawing strips of the moose or leather-wood through and through.
Wax, being a non-conductor, cannot be electroplated unless a conducting surface be first applied. The coatings ordinarily used in electro-deposition were entirely out of the question on account of coarseness, the deepest waves of the record being less than one-thousandth of an inch in depth, and many of them probably ten to one hundred times as shallow.
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