— battery, B. Silliman, Jr., xliii, 393; xliv, 180.f
Graptolites, remarks on, xlvii, 370.f
Grasshopper's leg a substitute for frogs in galvanic experiments, J. W. Bailey, xxxi, 292.f
Grasses, the importance of, to man, W. Darlington, xli, 365.
Gratiola micrantha, v, 287.
— missouriana, x, 258.
Gravel, singular deposit near Troy, A. Eaton, v, 22.
Graves, R., a gelatinous meteor, ii, 335.
—, on a simplification of Wollaston's goniometer, xxiii, 75.f
Gravity, specific, on the means of taking, R. Hare, xi, 121.f