Page:The Anatomy of Tobacco.pdf/116

 gratiâ coal, which before it is burnt exists in privation; when it is burning, in position; and when it is burnt to ashes, in negation. Such substance is said to be determinate. And anything which is capable of being applied to some use, and on being applied continues its usefulness to infinity, is said to exist in two modes only, namely—I. Privation. II. Continuation. Exempli gratiâ stone, which, when it is in the quarry, exists in privation; but when it is shapen into a pyramid, in continuation. Such substance is said to be continuous. Thirdly, anything which is capable of being applied to some use, and on being applied vanishes utterly out of our sight, is said to exist in three modes, namely—I. Privation. II. Position. III. Extinction. Exempli gratiâ oil, which, when it is unlighted, exists in privation; when it is in the state of being employed in giving light, in position; and when, the oil being consumed, the lamp goes out, in extinction. Such substance is said to be