Alchemy in Nebulum has been around since men first began to explore the new world. It is partly a categorizing method and an identification method.
For identification, the world is broken down into three basic sections: Sky, Land, and Water. Each of these is further broken down into three primary components. Each of these components has a variety of sub-components which all fit into that category. The various sections can also represent colors.
The Book of Zarc includes an interesting addition to this system by adding a completely new section with five components for living things. The components of that section are Race, Bird, Animal, Fish, and Plant.
Sky is made up of the sun, moons, and stars. It tells of both light and darkness and their origins. It is said that the stars hold the keys to the future but that study often leads into astrology.
Water is the substance which stays lower than land except when it is unable to move in its frozen form. Water tells of temperature.