| Seaweed | Bituminous
| leached. | unleached. | 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]--

Soluble Matter 12.3
Insoluble 87.7

The Soluble parts consist of nearly--

Carbonic Acid 10.0
Sulphuric Acid 10.3
Muriatic Acid (Chlorine, &c.) 18.26
Potash and Soda 61.44
------
100.00

No. XV.

Composition of some of the more common Compounds of Acids and Alkalies.

--------------------------------------+----------------+------------------
100 Parts of | Contain of the | Contain of the
| Alkalies | Acids
--------------------------------------+----------------+------------------
Carbonate of Potash (Pearlash) | Potash 68.09 | Carbonic 31.91
Bi-Carbonate of Potash (Saleratus) | do. 51.62 | Carbonic 48.38
Nitrate of Potash (Saltpetre) | do. 46.56 | Nitric 53.44
Silicate of Potash | do. 50.54 | Silicic 49.46
Carbonate of Soda | Soda 58.58 | Carbonic 41.42
Bi-Carbonate of Soda (Common Soda)[AR]| do. 41.42 | Carbonic 58.58
Nitrate of Soda | do. 36.60 | Nitric 63.40
Sulphate of Soda (Glauber Salts)[AR] | do. 19.38 | Sulphuric 24.85
Silicate of Soda | do. 40.37 | Silicic 59.63
Carbonate of Lime