—, see farther, [Dike.]
Five, the most favorite number of nature, xvi, 172.
Flame, effect of vapor on, J. F. Dana, i, 401.
—, theory of, xiii, 179.
— of lamp, curious effect of a current of air on, xxxii, 88.f
Flax, the milkweed a substitute for, xxvii, 384.
Flexure of rocks caused by earthquake undulations, H. D. and W. B. Rogers, xliv, 361; xlv, 345; xlvii, 276.
Flies, shower of, xxii, 375.
Flint, on earthquakes in the Mississippi, xv, 366.
Floating Islands, A. Pettengill, xii, 122.