The amount of water present in freshly-cut wood is very different, as is shown by the following table by Scheubler and Hartig: Hornbeam contains 18.6 per cent. of water; Willow, 26 per cent.; Ash, 287 per cent.; Birch, 30.8 per cent.; Oak, 347 per cent.; Pine, 397 per cent.; Red Beech, 397 per cent.; Elm, 44.5 per cent.; Larch, 48.6 per cent.; and White Poplar, 50.6 per cent. Wood, when dried at 2660 F., at which temperature all the hygroscopic water is expelled, is composed of 50 parts carbon (inclusive of one part of ash) and 50 parts of chemicals.