ROOTS AND TUBERS. Potato 4.16 Jerusalem Artichoke 5.38 Turnip 13.64 Beet 8.27 Kohl-rabi 6.08 Rutabaga 7.34 Carrot 5.80 Belgian White Carrot 6.22 Mangold-Wurzel 8.78 Parsnip 5.52 Radish 7.35 Chicory 5.21 Madder 8.33 WOODS. Beech 0.38 Apple 1.29 Cherry 0.28 Birch 1.00 Oak 2.50 Walnut 1.57 Lime 5.00 Horse-chesnut 1.05 Olive 0.58 Mahogany 0.81 Vine 2.57 Larch 0.32 Fir 0.14 Scotch Fir 0.17 Filbert 0.50 Chesnut 3.50 Poplar 0.80 Hazel 0.50 Orange 2.74 Vine 2.57 BARKS. Beech 6.62 Cherry 10.37 Fir 1.79 Oak 6.00 Horse-chesnut 7.85 Filbert 6.20 Cork 1.12 FRUITS.