"The idea and construction of this arch is taken from the figure of a spider's circular web, of which it resembles a section, and from a conviction that when nature empowered this insect to make a web she also instructed her in the strongest mechanical method of constructing it. Another idea, taken from nature in the construction of this arch, is that of increasing the strength of matter by dividing and combining it, and thereby causing it to act over a larger space than it would occupy in a solid state, as is seen in the quills of birds, bones of animals, reeds, canes, &c. The curved bars of the arch are composed of pieces of any length joined together to the whole extent of the arch, and take curvature by bending." Paine and his bridge came to England at a fortunate moment. Blackfriars Bridge had just given way, and two over the Tyne, one built by Smeaton, had collapsed by reason of quicksands under their piers. And similarly Pitt's policy was collapsing through the treacherous quicksands on which it was based. Paper money and a "sinking fund" at home, and foreign alliances that disregarded the really controlling interests of nations, Paine saw as piers set in the Channel.* He at once took his place in England as a sort of institution. While the engineers beheld with admiration his iron arch clearing the treacherous river-beds, statesmen saw with delight his prospective bridges spanning the political "Rubicon." Nothing could be more felicitous than the title of his inaugural pamphlet, "Prospects on the Rubicon." It remembered an expression in Parliament at the beginning of the war on America. "'The Rubicon is passed,' was once given as a reason for prosecuting the most expensive war that England ever knew. Sore with the event, and groaning beneath a galling yoke of taxes, she has again been led ministerially on to the shore of the same delusive and fatal river." The bridge-builder stretches his shining arches to France, Holland, Germany,--free commerce and friendship with all peoples, but no leagues with the sinking piers called thrones. * It is droll to find even Paine's iron bridge resting somewhat on a "paper "pier. "Perhaps," he writes Jefferson, "the excess of paper currency, and the wish to find objects for realizing it, is one of the motives for promoting the plan of the Bridge."