Branch Physique, article Glace
P. 146 (an. 1853).
Dr. Lister experimented on sea-water in December 1684 (Ph. Trans, xiv. 836), and found that though it took two nights to freeze, it was much harder when once frozen than common ice, lasting for three-quarters of an hour under a heat which melted 100 times its bulk of common ice at once. It was marked with oblong squares, and had a salt taste. Ice formed from water with an admixture of sulphuric acid is said to assume a crystalline appearance.
See also a pamphlet entitled Das unterirdische Eisfeld bei der Dornburg am Südlichen Fusse des Westerwaldes, by Thomä of Wiesbaden (32 pages, with a map of the district), published in 1841.
But see page 262.