. Railroad record, and journal of commerce, banking, manufactures and statistics . h immediately attacks the free silicaand conveys it in its turn to the process goes on continually till the limein the concrete is saturated with silica. In this way, within a week, the strength of th»concrete is increased from 50 to 150 per to a still greater degree by a longer im-mersion. As the alkali acts only as a carrierof the silica, it is used over and over azain,and it is in this that the economy of the manu-facture consists. The substance thus formedis known as silicated concrete
. Railroad record, and journal of commerce, banking, manufactures and statistics . h immediately attacks the free silicaand conveys it in its turn to the process goes on continually till the limein the concrete is saturated with silica. In this way, within a week, the strength of th»concrete is increased from 50 to 150 per to a still greater degree by a longer im-mersion. As the alkali acts only as a carrierof the silica, it is used over and over azain,and it is in this that the economy of the manu-facture consists. The substance thus formedis known as silicated concrete, or the patentVictoria stone, and it has been manufacturedon a grand scale in London, and several largeedifices have been built entirely from it. Theeconomy of its construction is such that itpromises to supersede natural stone, exceptwhere the latter is very cheap and London it can be put in place in building ata much less cost than natural stone.— ChicagoSour. Com. EXTINGUISHER. a o -*=■ o CD ■ o tu (T Ph -i^» lb OS CD PQ 1- Pi Z < a Ph < rS CD r^ o. •-ri e 03 02 m z N O S3 2 w m s= i-j H B>-•- > 33 W m rt> H © o D2 CD l=S co Insurance Companies Reduce Eates Where it is Introduced. «®Tbe attention of Practical BnilroadMon is earnestly invited to the record ofworKdone, and to the fact tbat nine-tentbsof the fires that kindle at stations, In moodpiles, and on Trains, are within the powerof this Machine when discovered F. W. FAR WELL, Secretary, 122 Washington Street,CHICAGO. H. J. BOND, Genl Agent, 22 West Fourth Street, CINCINNATI. BAILED AD NOTICE. The Cincinnati & Great North-ern Railroad Company. The undersigned Corporators of the Cincinnati & GreatNorthern Railroad Company hereby give notice that Booksof Subscription to the capital stock of said Company willbe opi-ned at the office of the Railroad Record, No. 167W;ilaut street, Cincinnati, Ohio, on Saturday, the 26th dayof August next, at 11 oclock, A. M., of s*id day, and con-tin
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Keywords: ., bookcentury1800, bookdecade1850, bookidrailroadreco, bookyear1853
