— conduit pipes, vi, 173.
— furnaces, number in England and Scotland, xvi, 395.
— mountain of Missouri, iii, 63.
— — ibid, J. T. Hodge, xliii, 58.
— spikes, experiments on the adhesion of, W. R. Johnson, xxxii, 34.f
— trade of Great Britain, amount of, xx, 176.
— — of Wales, xx, 182.
— works of Sweden, amount of exports from, in 1828, xviii, 173.
— — of Glasgow, xli, 48.
— — of Russia, improvements in, xxx, 181.