The Essayist’s suggested analogy between man’s relation to time and to space appears to us not understood, in either its scope or nature, by Sir David Brewster. At this we are as much surprised, as at the roughness with which he characterises the argument, as “the most ingenious though shallow piece of sophistry he has ever encountered in modern dialectics.” The Essayist suggests a comparison between the numbers expressing the four magnitudes and distances,—of the earth, the solar system, the fixed stars, and the nebulæ—and the numbers expressing the antiquity of the four geological periods “_for the sake of giving definiteness to our notions_.” Sir David abstains from quoting these last expressions, and alleges that the Essayist, “quitting the ground of analogy,” founds an elaborate argument on the mutual relation of an atom of time and an atom of space. The “argument” Sir David thus presents to his readers, the capital and italic letters being his own: “That is, _the earth, the_ ATOM OF SPACE, _is the only one of the planetary and sidereal worlds that is inhabited, because it was so long without inhabitants, and has been occupied only an_ ATOM OF TIME.”[65] “If any of our readers,” he adds, “see the force of this argument, they must possess an acuteness of perception to which we lay no claim. To us, it is not only illogical; it is a mere sound in the ear, without any sense in the brain.” This is the language possibly befitting an irritated Professor towards an ignorant and conceited student, but hardly suitable when Sir David Brewster is speaking of such an antagonist as he cannot but know he has to deal with. It does not appear to us the Essayist’s attempt, or purpose, to establish any arbitrary absolute _relation_ between time and space, or definite proportions of either, as concurring or alternative elements for determining the probability of a plurality of worlds. But he says to the dogmatic astronomical objector to Christianity, Such arguments as you have hitherto derived from _your_ consideration of SPACE, MULTITUDE, and MAGNITUDE, for the purpose of depressing man into a being beneath his Maker’s special notice, I encounter by arguments derived from recent disclosures concerning another condition of existence—DURATION, or TIME. Protesting that neither Time nor Space has any true connection with the subject, nevertheless I will turn your own weapons against yourself. My argument from Time shall at least neutralise yours from Space: mine shall involve the conditions of yours, fraught with their supposed irresistible force, and falsify them in fact, as forming premises whence may be deduced derogatory inferences concerning man. The Essayist’s ingenious and suggestive argument is intended not to prove an opinion, but _to remove an objection_; which, according to the profound thinker, Bishop Butler, is the proper office of analogy. It is asked, for instance, _how_ can you suppose that man, such as he is represented to be, occupies only an