Take another. We are all now convinced of the existence of America; and so, some three or four hundred years back, was Christopher Columbus--but nobody else. Alone, he proved that mighty continent so probable, from geometrical measurements, and the balance of the world, and tides, and trade-winds, and casual floatsams driven from some land beneath the setting sun, that he was antecedently convinced of the fact: and it would have been a shock to his reason, as well as to his faith, had he found himself able to sail due west from Lisbon to China, without having struck against his huge probability. I purposely abstain from applying every illustration, or showing its specific difference regarding our theme. It is better to lead a mind to think for itself than to endeavour to forestall every notion. Another. A Kissoor merchant in Timbuctoo is told of the existence of water hard and cold as marble. All the experience of his nation is against it. He disbelieves. However, after no long time, the testimony of two native princes who have been _feted_ in England, and have seen ice, shakes his once not unreasonable incredulity: and the additional idea brought soon to his remembrance, that, as lead cools down from hot fluidity to a solid lump, so, in the absence of solar heat, in all probability would water--corroborates and makes acceptable by analogous likelihood the doctrine simultaneously evidenced by credible witnesses. Yet one more illustration for the last. Few things in nature appear more unlikely to the illiterate, than that a living toad should be found prisoned in a block of limestone; nevertheless, evidence goes to prove that such cases are not uncommon. Now, if, instead of limestone, which is a water-product, the creature had been found embedded in granite, which is a fire-product; although the fact might have been from eye-sight equally unimpeachable, how much more unlikely such a circumstance would have appeared in the judgment of science. To the rustic, the limestone case is as stout a puzzle as the granite one; but _a priori_, the philosopher--taking into account the aqueous fluidity of such a matrix at a period when reptiles were abundant, the torpid qualities of the toad itself, and the fact that time is scarcely an element in the absence of air--arrives at an antecedent probability, which comforts his acceptance of the fact. The granite would have staggered his reason, even though his own experience or the testimony of others were sufficient, nay, imperative, to assure his faith: but in the case of limestone, Reason even helps Faith; nay, anticipates and leads it in, by suggesting the wonder to be previously probable. How truly, and how strongly this bears upon our theme, let any such philosophizing mind consider.