—, improvements in the achromatic microscope, xx, 265.f
—, obituary notice of, xxii, 380.
Thomas, J., transmission of galvanic light through metals of different conducting powers, xxxiv, 205.f
Thompson, W. A., facts relating to diluvial action, xxiii, 243.
—, account of marks on graywacke, xx, 124.
—, on the vitality of toads confined, xxv, 41.
Thomson, Sir Benjamin, obituary notice of, xix, 28; xxxiii, 21.
Thomson, C., grave of, xxxv, 389.
Thomson, J., elevation of rails for roads of certain curvature, xxii, 346.f
—, on inclined planes in the construction of railroads, xxiii, 107.