Natural

(natural.) [From L. natura, nature.] (Mus.) A character which contradicts a flat or sharp placed at the beginning of a stave or elsewhere, and causes the note to become what it would be if the flat or sharp were not used. Natural History, in its most extensive sense, is the description of material existences composing the universe. But it is usually limited to the study of the animal, vegetable, and mineral objects of our globe. In this sense it includes zoölogy, botany, geology, and mineralogy, with their dependent sciences. [s. 633]