Droitwich, salt-making there, A.D. 816, 33 Furnival, Wm., introduces steam heat, 76 --, economy in production by; alarm of salt proprietors, 78 --, persecution of, a victim to Cheshire salt proprietors, 76–82 --, his patents, 77; --, his end, 82 Hodgkinson (Jas.), his system, 76, 138–141 Holland (Philemon), 32 Holland (Sir Thos.), his eulogy of the Hodgkinson process, 141 Jackson, (Dr. W.), 56 Johnson (Geo.), account of treatment of brine by, 42, 43 King’s Vale Royal, particulars relating to Cheshire salt districts, 43, 44 Lakes, or “Flashes,” 103, 104, 112, 113 Lowndes (Thos.), improved method of brine-making by, 62, 65 --, persecution of, 71 Marbury, discovery of salt at, in 1670, 97 Marbury Pipe, 54, 122, 123 Martindale (Adam), Communication to Royal Soc., 97 Mendeléeff, on crystallization, 5 Middlewich owners and number of salt-houses at, 51 --, output at, 54 Nantwich owners and number of salt-houses at; decline of industry at, 51, 53 Nevada, rock-salt at, 3 New York, salt-springs in; methods employed there, 127 Northwich, Adelaide Marston mine, 98 --, earliest manufacture in England, 32 --, output of brine at, 53 --, the “Walling Booke” of, 48 Ormerod, on the origin of the salt field of Cheshire, 84, 85 Rainfalls, cycles of, affecting salt deposits, 91 Rastel (Dr. Thos.), method of evaporation of brine at Droitwich, 60–62 Rock-salt, purest in Hungary, 1; rarely found pure, _ib._ Rock-salt Mining--a dead industry; method of working, 101–103 Royal Society, _Phil. Trans._, 56, 60 Rumania, deposits in, 20, 26 --, estimated reserves and annual output, 28 Salt, Adelaide Marston mine, 98 --, ancient orders concerning, 44–48 --, beginnings of the industry, 8, 9, 10 --, chemistry and properties of, 1 --, Chinese methods of making, 11 --, colour of, 2 --, convict labour, 20 --, crystals in, 4 --, decline of industry at Nantwich, 52, 53 --, depth and thickness of deposit at Northwich, 90 --, discovery of, at Marbury in 1670, 97 --, Domesday Book--reference to salt in A.D. 1084, 33 --, earliest manufacture in England, 32 --, effect upon sea-water, 2 --, experiments for removal of impurities in, 30, 31 --, formation and extent of Cheshire deposits, 83–96 --, importation of, 38 --, Italian method of making, 12 --, Japanese methods of making, 12 --, lectures on, by Ward (Thos.), 126 --, Mendeléeff on, 6 --, method of working top and bottom beds, 100 --, name first given, 1 --, Portuguese and Spanish method of making, 14 --, preservative property of, 6, 9 --, Rastel’s account of clarifying, 61, 62 --, solubility of, 2 --, symbol of sanctity, 9 --, theories respecting deposits, 85–90 --, Prof. Thompson’s calculations, 92–96 --, value in agriculture, 6 Salt-beds, area of Cheshire, 92 “Salt-licks,” 8