—, on the invention of the mariner's compass, xl, 242.
—, mean height of the continents above the sea, xlix, 397.
Humboldtilite, xi, 251.f
Humboldtine, v, 193.
Hume, Sir Abraham, notice of, xxxvii, 118.
Hungary, observations on Beudant's geological travels in, vii, 256.
—, tribe of Scotacks in, v, 384.
Hunt, R., on the chromatype, xlvi, 396.
—, influence of light on the germination of seeds, xliv, 352.
—, influence of light on the growth of plants, xliv, 352; xlvi, 397.