Canadian engineer . Fig. 7.—Testing Bridge by Seven Steam Rollers. For purposes of comparison a list of the prin-cipal dimensions of some other large arch bridges isgiven in the table on the following *With sectional areas of .175 and .61 sq. in. respectively. Fig. 8. On page 847 of this issue of The Canadian Engineerwill be found an article by Mr. Henry G. Tyrrell entitledAmerican Impressions of the Risorgimento Bridge at June 27, 1912. THE CANADIAN ENGINEER 843 Rome. This article, read in conjunction with th(; foregoingdescription will be of interest to our readers.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublishertoron, bookyear1893