ABSTRACT
The near relationship between our notion of time and our notion of space, is implied in various current forms of speech. The like reciprocity of symbolism is visible in science. Not only is it that a second of time is a function of the length of the pendulum, and that our hours are measured by spaces on the dial; but it is that, in astronomy, a degree, which was originally a day’s journey of the sun along the ecliptic, has become the name of an angular space. As the ideas of space and coexistence are inseparable, so also are the ideas of time and sequence. Respecting the perception of any particular portion of time it only needs saying that it consists in the classing of the relation of position contemplated, with certain before-known relations— the cognition of it as like such before-known relations.
