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Sentences for "antiquities"
The museum is putting on a special exhibit of antiquities from ancient Egypt.
The French expedition to Egypt had called the attention of learned men to the wonderful store of antiquities in that country, and there had been brought back to France numerous mummified corpses of the animals which the ancient Egyptians revered and preserved, and which, at a reasonable computation, must have lived not less than three or four thousand years before the time at which they were thus brought to light.
The manufacture of these pretended antiquities is carried on in Smyrna, Beyrut, and Jerusalem on an extensive scale, and appears to be very profitable.
[29] “Concerning the statuette: the medium was-two months previous to the seance here spoken of-given the catalogue of a sale of antiquities to be held at Bordeaux.
In the Museum of Silesian Antiquities at Breslau.
5) covered with needles of sodium nitrate[7] (Chili saltpetre) where [7] the nitric acid has been contributed by the decomposition of organic substances; and here the presence of nitrates proves inimical to antiquities just in the same way as a coating of limewash may be seen to be destroyed by the so-called wall-saltpetre [8].
If in some cases it may be uncertain whether the destruction of antiquities of limestone or earthenware has been due to mechanical or to chemical influences, this uncertainty is excluded in the case of metallic objects, of which those of bronze and iron chiefly come under the notice of the antiquary.
Krefting[20] gives as the average of a series of analyses of the rust on northern antiquities the following composition: Ferric oxide 7•05 Ferrous oxide 12•7 Carbonic acid 3•9 Calcium oxide 0•58 Magnesium oxide 0•09 Ferrous chloride 0•260 Calcium chloride 0•280 Magnesium chloride 0•023 0•61% Soluble salts.
In this way antiquities which are valuable for their history, or for their workmanship, are sometimes more or less injured by this development of patina, which archaeologists regard as a plague in their collections.
On the other hand, as almost all the iron antiquities which do not contain chlorine compounds may be treated by the methods of the second group, simple and direct impregnation is passing more and more out of use.
This method, for the description of which I am indebted to Herr Straberger, has proved effective in the preservation of a number of iron antiquities in the Museum at Linz on the Danube.
The method of preservation of iron antiquities used in the Saalburg Museum at Homburg is described by Jacobi as follows: The object is heated in the fire of a forge, which causes the chief part of the rust to flake off, while any rust which still adheres is removed when cold by water and brushing.
These good results are probably due to the fact that the antiquities of iron preserved in that Museum are for the most part found in [100] good condition, having very little rust and certainly containing only a very small amount of chlorine.
(3) Preservation of Iron Antiquities by Removal of the Rust.
For the method of restoring iron antiquities and of filling [108] up large gaps, the reader should refer to Blell’s detailed account; it will here suffice to quote his statement that a mixture of iron filings with tin filings can be used for this purpose.
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