— —, liquid, vii, 353; xvii, 166; xxxv, 374.
— —, solid, xlix, 376.
— ether, xxxi, 275.
Sumach, bimalate of lime in, W. B. Rogers, xxvii, 294.
Summer, Indian, xii, 120; xxvii, 140.
—, —, on the cause of the peculiar aspect of the air in, xviii, 66.
—, —, L. Foot on, xxx, 8.
Sun, a blue, seen at Bermuda, xl, 323.
—, singular appearance of, xxi, 198.
—, a supposed change by the rays of, in an elementary substance, J. W. Draper, xlvi, 390.