New York: D. Van Nostrand, 1868. First U.S. Edition. Tall 8vo. 38 pp Text; 8 illustrated Plates of Roofs Lately Executed;  pp publisher's advertisements. In text woodcuts. Pebbled brown cloth with gilt lettering. Light wear to spine ends and corners; else a near fine copy. Item #20709
In the author's third work on the examples of iron roofs, he explains "... as succinctly as is compatible with the nature of our subject the theory of lattice girders, trusses, and arches, as applied to roof structures, separating the purely theoretical from the practical theoretical part; furnishing in the former a complete investigation of the nature of such structures, and in the latter giving the ultimate formulae in their simplest forms, in order to render them easy of reference, and to form also a Supplementary Volume to the two volumes of Executed Examples of Iron Roofs." - Preface.