—, J. Locke, notice of a new, xxvi, 103f, 378.f
—, —, large thermoscopic, xxxiii, 365.
—, J. P. Emmet's, new form of, xxvi, 311.
—, C. G. Page, on the use of, xxxii, 354.f
—, —, astatic, or rotary, xxxiii, 376.f
—, —, axial, xlix, 136.f
—, C. G. Page, circular, xxxv, 259.f
—, modified, W. B. and H. D. Rogers, xxvii, 39.f
Galvanoscope, a means of detecting the failure of water in steam boilers by, C. G. Page, xxxvi, 141.f
Galvano-magnetic condenser, v, 394.