Composition of Ashes, leached and unleached, showing their manurial value:
| Oak unleached. | Oak leached. | Beech unleached. | Beech leached. | |
| Potash | 84 | — | 158 | — |
| Soda | 56 | — | 29 | — |
| Lime | 750 | 548 | 634 | 426 |
| Magnesia | 45 | 6 | 113 | 70 |
| Oxide of Iron | 6 | — | 8 | 15 |
| Sulphuric Acid | 12 | — | 14 | — |
| Phosphoric Acid | 35 | 8 | 31 | 57 |
| Chlorine | 2 |
No. XIII.
| Birch leached. | Seaweed unleached. | Bituminous Coal unleached. | |
| Potash | — | 180 | 2 |
| Soda | — | 210 | 2 |
| Lime | 522 | 94 | 21 |
| Magnesia | 30 | 99 | 2 |
| Oxide of Iron | 5 | 3 | 40 |
| Sulphuric Acid | — | 248 | 9 |
| Phosphoric Acid | 43 | 52 | 2 |
| Chlorine | — | 98 | 1 |
No. XIV.
TOBACCO.
Analysis of the ash of the Plant [Will & Fresedius]—
| Potash | 19.55 |
| Soda | 0.27 |
| Magnesia | 11.07 |
| Lime | 48.68 |
| Phosphoric Acid | 3.66 |
| Sulphuric Acid | 3.29 |
| Oxide of Iron | 2.99 |
| Chloride of Sodium | 3.54 |
| Loss | 6.95 |
| 100.00 |
Analysis of the ash of the Root [Berthier]—