For a like reason it is unnecessary to give here all the details of his bridge sent by Paine to his correspondents. Of this invention more is said in further chapters, but the subjoined letters are appropriate at this point The first two were written at Bordentown, where Paine settled himself in the spring. To Franklin, undated.--"I send you the two essays I mentioned. As the standing or not standing of such an arch is not governed by opinions, therefore opinions one way or the other will not alter the fact. The opinions of its standing will not make it stand, the opinions of its falling will not make it fall; but I shall be exceedingly obliged to you to bestow a few thoughts on the subject and to communicate to me any difficulties or doubtfulness that may occur to you, because it will be of use to me to know them. As you have not the model to look at I enclose a sketch of a rib, except that the blocks which separate the bars are not represented." To Franklin, June 6th.--"The gentleman, Mr. Hall, who presents you with this letter, has the care of two models for a bridge, one of wood, the other of cast iron, which I have the pleasure of submitting to you, as well for the purpose of showing my respect to you, as my patron in this country, as for the sake of having your opinion and judgment thereon.--The European method of bridge architecture, by piers and arches, is not adapted to many of the rivers in America on account of the ice in the winter. The construction of those I have the honor of presenting to you is designed to obviate the difficulty by leaving the whole passage of the river clear of the incumbrance of piers... My first design in the wooden model was for a bridge over the Harlem River, for my good friend General Morris of Morrisania... but I cannot help thinking that it might be carried across the Schuylkill.... Mr. Hall, who has been with me at Borden Town, and has done the chief share of the working part, for we have done the whole ourselves, will inform you of any circumstance relating to it which does not depend on the mathematical construction. Mr. Hall will undertake to see the models brought safe from the stage boat to you; they are too large to be admitted into the house, but will stand very well in the garden. Should there be a vessel going round to New York within about a week after my arrival in Philadelphia I shall take that convenience for sending them there, at which place I hope to be in about a fortnight."