In 1815, when Rennie began his bridge over the Thames at Southwark, neither the Government nor the City of London employed him; it was a Company that approved his designs, and financed the undertaking. At an expense of £800,000, three bad arches of cast-iron were put up from “elegant” stone piers and abutments; yet London was charmed by “a great feat of engineering,” partly because 5780 tons of ironwork had been employed, and partly because the central arch had a span of 240 ft. From 1819 to November 8, 1864, the Company was a toll gatherer on their industrial bridge; then the toll was done away with, and the Company received from the City an industrial compensation. Here is a financial adventure which might have been undertaken to benefit a small township which had in its neighbourhood some new ironworks and collieries. Still more farcical was the public lottery that helped to collect money for the building of the first Westminster Bridge, between 1738 and 1750. Even now, after many lessons from past follies, London has made more than one muddle over the project of St. Paul’s Bridge. Not even the Tower Bridge, with all its blatant defects, has enabled the City to be alert and clever as a pontist. A more absurd structure than the Tower Bridge was never thrown across a strategic river. What would be the use of those ornate towers if the suspended roadway connecting them to the banksides were cut by a shell or by a falling bomb? And what anachronism could be sillier than that which has united the principle of metal suspension to an architecture cribbed partly from the Middle Ages, and partly from the French Renaissance? The many small windows, the peaked roofing, the absurdly impudent little turrets, the biscuit-like aspect of the meretricious masonry, the desperate effort to be “artistic” at any cost: all this, you know, is at standing odds with the contemporary parts of the unhistoric bridge, parts huge in scale, but so commercial that there is not a vestige of military forethought anywhere. It is mere perishable bulk. [Illustration: THE TOWER BRIDGE, LONDON] FOOTNOTES: