In all the alternations of forest growths that are taking place to-day, on this continent or elsewhere, this one vital law is traceable everywhere. In the course of the next year, it will be as palpable in the Island of Java, recently desolated by the most disastrous earthquake recorded in history, as in any other portion of the earth, however free from such volcanic action. On the very spot where mountain ranges disappeared in a flaming sea of fire, and other ranges were thrown up in parallel lines but on different bases, and where it was evident that every seed, plant, tree, and thing of life perished in one common vortex of ruin, animal as well as vegetable life will make its appearance in obedience to this law, as soon as the rains shall again descend, cool the basaltic and other rocks, and the life-giving power referred to by Isaiah once more become operative. There is no more doubt of this in the mind of the learned naturalist, than in that of the most devout believer of the Bible, from which this most remarkable formula is taken. We have no disposition to arraign the American and European "Agnostics," as they are pleased to call themselves, for using the term "Nature" instead of God, in their philosophical writings. As long as they are evidently earnest seekers after _Truth_ as it is to be found in nature--the work of God--they are most welcome into the temple of science, and their theories deserve our thoughtful consideration. It is only when they become dogmatic, and assert propositions that have no foundation in truth, as we sincerely believe, that we propose to break a lance at their expense, and lay bare their fallacies. We claim nothing more for ourself, as a scientific writer, than we are willing and ready to accord to them. Indeed, we would champion their right to be heard sooner than we would our own, on the principle that it is our duty to be just to others before we are generous to ourselves, or those of our own following. But our Agnostic friends should remember that when they charge us with being "dogmatic in science," the charge should be made good from a scientific stand-point, and not merely by the bandying of words.