—, meteorological enterprise of, xliv, 212.
Esquimaux Indians, remarks on, xvi, 145.
Essential oils, reaction of, with sulphurous acid, R. Hare, xxxi, 281.
Essex county, (N. Y.) mountains of, and the sources of the Hudson, W. C. Redfield, xxxiii, 301.f
Etching glass with fluor spar, vi, 354.f
Etna, ascent of, S. L. Johnson, xxvi, 1.
—, crater of, xxvi, 7.
—, earthquakes in 1823, ix, 216.
—, observations on, E. de Beaumont, xxxi, 168.
—, luminous flames at, xxxi, 169.