—, manuscripts at, v, 385.
—, clergy and population of, ix, 186.
Roman aqueducts, xix, 389.
Romanzow's expedition across Behring's Straits, ii, 345.
Roofs of pasteboard, xxiv, 381.
Roofing with zinc, A. Caswell, xxxi, 248.
—, ibid, L. D. Gale, xxxii, 315.
—, slate, of Lebanon, N. Y., v, 11.
—, —, in Vermont, v, 272.
Ropes, on the various vegetable materials for, xxi, 27; xxv, 330.