—, the galvanoscope, a means of detecting the failure of water in steam boilers, xxxvi, 141.f
—, observations on electricity, xxxvi, 353.
—, magneto-electric multiplier, xxxvii, 275.f
—, an improved form of Saxton's magneto-electric machine, xlviii, 392.
—, new electro-magnetic machine, xlix, 131.f
—, new axial galvanometer, xlix, 136.f
—, double axial reciprocating engine, xlix, 139.f
—, entomological cabinet of, for sale, xxxix, 211.
—, mode of preserving Lepidoptera, xlvii, 131.
Paine, M., Medical Commentaries, notice of, xxxix, 209.