These general but indefinite degrees of comparison, as they are termed, once defined the temperature of our atmosphere, until a scale was discovered to mark its increment and diminution by the accuracy of numbers. Great as may be the convenience of general terms, both for abbreviation and dispatch, they are notwithstanding liable to considerable suspicion, and are the frequent sources of error and misapprehension. It has been principally for this reason, that in proportion to the advancement of the physical sciences, the study of scholastic metaphysic has been deservedly neglected. FOOTNOTE: [17] Time, or the admeasurement of the successive order of our perceptions, embraces a wide area of definition; and it is perhaps impossible, in a few words, to circumscribe the range of its meaning. The sagacity of the human intellect, although by very slow gradations, has accumulated the wonderful mass of knowledge we now possess on this subject: and the investigations which have been made into the faculties of animals, justify the conclusion that its comprehension is limited to man. It would be highly interesting to trace the origin and progress of our information, concerning the nature of time; but a short note to a compressed essay, does not admit of such examination. However, it appears evident, that the striking and regular phenomena of nature have constituted some of our most important distinctions. Thus, the ebbing and flowing of the tide have formed a very early notation; and we still retain in our language the traces of its application in Whitsun_tide_, Shrove_tide_, Allhallow_tide_, &c. The great divisions of time are well understood; as day, from dawn; month, from moon; year, Anglo-Saxon gear, from gyrdan, the girth (of the zodiac). A moderate knowledge of the cognate languages of the north, would readily unravel the origin of all the terms that have been employed by us and kindred nations, for the purpose of characterising the succession of our perceptions. All these subdivisions necessarily imply a comprehension of numbers. From the experience of the past, man has inferred the _probability_ of the future; for by natural knowledge, the probability, great as it is, can only be deduced. The certainty has descended from a higher authority. Although the grammar of our language has endeavoured to mark our predictions of the future by certain signs; yet these do not convey any definite intelligence of that which _is_ to come. In this state of being, man may receive assurances of ulterior existence, but he cannot invest his predictions with the certainty of numbers. The signs of Will and Shall, the utmost boundaries of his future glance, are both verbs in the present tense, and only signify his immediate intention of performance, at a time which may _probably_ arrive. INSTINCT.