—, on a natural system of chemical classification, xlix, 384.
Gibbsite in Massachusetts, iii, 239, (called Wavellite); v, 269; vi, 247, 364; viii, 52.
— in New York, xl, 75.
Gibson, J. B., on the geology of the lakes and the valley of the Mississippi, xxix, 201.
Gigantolite, analysis of, xlii, 387.
Gilding by electrography, xli, 402.
Gin, loss of memory from the use of, xxvi, 211.
Girard, P. S., on navigable canals, iv, 102; vii, 286.
Girardin, analysis of guano, xlviii, 181.
Glaciers and boulders in Switzerland, L. Agassiz, xli, 59, 190.