Dye, new blue, by Robiquet, xxii, 197.
—, superior green, vii, 196.
—, pink, from the flower of the sweet balm, xxv, 413.
—, for hats, from oak bark, xxii, 383.
—, employment of iodine as, xv, 394.
Dyeing, experiments on coloring matter for, M. Persoz, xxiv, 380.
—, use of chesnut wood in, i, 312.
E.
Eagle, bald, iv, 89.
Earth, action of gravity variable, and producing errors in the determination of the figure of, xv, 172.