Substitutions, theory of, as connected with the allotropism of chlorine, xlix, 346.f
Subterranean forests, xxi, 23.
— galleries, locust wood used in, xxx, 182.
Succinic acid, xlvii, 196.
Sugar, a means of preserving fish, viii, 391.
—, new acid from, xlvii, 196.
—, barley, crystallization of, xix, 177.
—, from beets, vi, 388.
—, — —, manufacture of, promoted in France, xi, 396.
—, — —, amount manufactured in France, xv, 394.