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76 SYMBOLS AND EQUIVALENTS OF TIIE ELEMENTS. Brittle and difficult to fuse.—Thorium, titanium, tantalum, scheelium, molybdenum, vanadium, chrome, uranium, manga nese, cerium. ° Brittle and easily fusible or volatile.—Arsenic, antimony, tellurium, bismuth. J Malleable. Zinc, cadmium, tin, lead, iron, cobalt, nickel copper. ’ /j. Metals reducible by heat.—Mercury, silver, gold pla- palladium, rhodium, iridium, osmium. ’ The remaining substances, the properties of which are not lully known, are didymium, erbium, terbium, niobium pelo- puun, norium, ruthenium. ' 273. Symbols and Equivalents of the Elements. (Taken principally from, Eresenius.) Aluminium A1 170-42 Antimony Sb 1612-90 Arsenic As 936-48 Barvum Ba 854"86 Bismuth Bi 266075 Boron B 13631 Bromine Br 999 63 Cadmium Cd 696-77 Calcium Ca 250-00 Carbon 0 75-00 Cerium Ce 690-80 Chlorine Cl 443-20 Chrome Cr 349-83 Cobalt Co 368-44 Copper Cn 396-00 Didymium D 620-00 Erbium E Fluorine F 236-71 C-lucium G 68-08 Gold Au 2456-72 Hydrogen H 12-50 Iodine I 1586-57 Iridium Ir 1232-00 Iron Fe 350-00 Lanthanium La 688-00 Lead Pb 1294'60 Lithium L 81’85 Magnesium Mg 167-76 Manganese Mn 344*44 Mercury Hg 1260-80 Molybdenum Mo 696-10 Nickel Nl 369-14 Niobium Nb Nitrogen N 176-25 Norium Nr Osmium Os 1242-60 Oxygen 0 100*00 Palladium I’d 662-64 Pelopium PI Phosphorus P 391-55 Platinum Pt 1233-50 Potash K 488'94 .Rhodium H 652-00 Euthenium Kt Scheelium W 1188-40 Selenium Se 495-30 Silicon *. 184-88 Silver Ag 1349-01 Sodium Na 287-17 Strontium Sr 545-60 Sulphur S 200-00 Tantalum Ta 1148-40 Tellurium To 801-80 Terbium Tr Thorium Th 743-90 Tin Sn 736-30 Titanium Tl 301-60 Uranium U 742-90 Vanadium Va 866-90 Yttrium Y 402-60 Zinc Ed 406 60 Zirconium Zr 281-20