1. Solids. Water=1.000.

Platinum, 21.53; Gold, 19.34; Mercury, 13.590; Thallium, 11.9; Lead, 11.350; Silver 10.500; Bismuth, 9.822; Copper, 8.95; Cadmium, 8.604; Nickel, 8.82; Cobalt, 8.538; Iron, 7.814; Tin, 7.291; Zinc, 7.146; Antimony, 6720; Aluminium, 2.56; Glass, 2.540 to 2.953; Sulphur, 1.990; Magnesium, 1.75; Calcium, 1.58; Rubidium, 1.52; Gum arable, l.355; Scaminony, 1.210; Amber, 1.078; Resin, 1.072; Camphor (laurel), .996; Sodium, .972; Bees'-wax, 962; Spermaceti, .943; Caoutchouc, .933; Potassium, '865.

2. Liquids. Water = 1.000.

Mercury, 13.590; Sulphuric acid, 1.854; Nitric acid (mono-hydrated), 1.517; Nitric acid, B., L., 1.420; Commercial nitric acid, 1.380 to 1.390; Double aqua fortis, 1.360; Single aqua fortis, 1.220; Hydrochloric acid (strongest), 1.210; Hydrochloric acid, B., L., 1.160; Solution of caustic potash, B., 1.058; Solution of ammonia, B., .959; Stronger solution of ammonia, B., .891; Saturated solution of alum, 1.033; Saturated solution of common salt, 1.200; Saturated solution of sulphate of copper, 1.150; Saturated, solution of sulphate of magnesia, 1.218; Sea-water 1.027; Milk, 1.032; Alcohol, B., .795; Rectified spirit, B., .838; Proof spirit, B., .920; Chloroform, B., 1"49 (not less than 1.480, Lond. ph.); Bisulphide of carbon, l.272; Syrup, B. 1.330; Spirit of nitric acid, B., .845; Ether (pure), .720; Acetic ether, B., .910; Caoutchoucine,.680; Oil of turpentine, .876 to .869; Olive oil,.9175; Spermaceti oil, 8.75; Southern whale oil, .920; Almond oil, .917; Creasote, 1.046; Oil of wine, 105; Essential oil of anise, .985; of caraway .964; of cinnamon, 1.008; of cloves, l.055; of cajeput, .925; of lemon, distilled, .847; of rosemary, .897; Tincture of sesquichloride of iron, .992.

3. Gases and Vapours. Atmospheric Air = 1.000.

Hydrogen, .0692; nitrogen, .972; Oxygen (Graham), 1.1056; Carbonic oxide, .972; Carbonic acid (carbonic anhydride), 1.524; Light carburetted hydrogen, .5595; Olefiant gas, .981; Chlorine, 2.470 (2.421 Graham); Vapour of ether, 2.582; v. of water, .622; v. of sulphur at 900°, 6617 (Graham); v. of phosphorus, 4.284; v. of iodine, 8.7l6.