tiles


Note:  Do not rely on this information. It is very old.

Ash

Ash, the mineral residuum which is left when any organic substance is burnt with free access of air. The amount of ash thus obtained varies within very wide limits; in bone it may amount to 75 per cent. Phosphate of calcium, alkaline, chlorides, and carbonates, silica, and sesquioxide of iron are all characteristic ash-constituents.