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THE PROPRIETORS of the .1 lining Review have offered a premium of Ten Guineas for the most ap- proved paper on Iron, historically, chemically and mefalltirgically considered, as well as in the economical manipulation or smelting of the ores, and its general application, with the comparative results arising from the processes observed in the various districts of England, Scotland, and Wales —stating the quantity and nature of materials used, the respective modes of extraction, the various metallurgical treatments to which they are sub- jected, and the results attendant thereon. The several forms of furnace, application of hot or cold blast, quality and description of the coal, and na- ture of the ores and the quantities used, being de- fined. Those papers which are not approved will be returned to the respective authors; the property of that obtaining the premium being vested in the proprietor of the Mining journal. All papers should be furnished not later than the 1st of Decem- ber next; and such papers as may require illustra- tions must be accompanied by drawings,—And a fur- ther premium of 5 Guineas will be presented for the most approved paper on the use and application of anthracite or stone coal, giving the results of ex- periments made in this country and in the United States. NEWLY INVENTED LIFE BUOY.—We have at all times great pleasure in being the channel of communication to the public of discoveries or in- ventions calculated to relieve the sufferings of our fellow-men; and in this spirit we have on many occasions called the attention of such of our rea- ders as reside at those parts of our sea-coast, to the importance of Captain Manby's apparatus for saving the lives of mariners. It is not, however, of that admirable contrivance that we wish now to speak, but of a very clever invention of Captain Henvey, of the Royal Navy, which, if used along with Captain Manby's, may be of the greatest ser- vice. It is a life buoy of the simplest but most efficacious description, and one which, as we have been assured by competent authority, has already proved useful in practice. This life buoy consists of a light wooden frame, and in shape of a horse- shoe, but sufficiently wide to admit of a man's body, and rendered buoyant by plates and discs of cork attached to it. The hinder part is open, but the front is fashioned into the shape of a beak, for more readily cutting the water. The "Lincoln- shire Association for the Preservation of Lives in Shipwreck," having satisfied themselves of the utility of Captain Ilenvey's invention by trying one which 'hat officer presented to them, lost no time in ordering three more; and we understand they have it in contemplation to combine the use of these life buoys with Captain Manby's apparatus in such a way that the lives of mariners, and of passen- gers o board stranded ships, they hope, may be saved, when, by all the means heretofore used, no- thing could be done to relieve them.— Times. NATURAL FLOWERS IS IVI.NTLR.-To produce these, some of the most perfect buds of the flowers it is wished to preserve, such as are latest in blow- ing and ready to open, must be chosen. Cut them Off with a pair of scissors, leaving the stem about three inches long; cover the end immediately with Spanish wax, and when the buds are a little shrunk and wrinkled, wrap them up separately in paper and place them in a dry box. When it is desired to have the flower to blow, take the buds overnight, out off the sealed end of the stem, and put the buds into water wherein has been infused a little nitre or salt, and the next day you will have the pleasure of seeing the buds open and expand themselves, and the flowers display their most lively colours, ane-breatbe their agreeable odour around.,

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