The second point to be carefully kept in mind is the very imperfect state of scientific knowledge even at the present time. As far as the matter in hand is concerned, the facts which are ascertained beyond all possibility of doubt, are very few. New means of investigation have very recently been discovered, and as a consequence new sources of information have been pointed out, new fields of research have been laid open. Twenty years ago the spectroscope was a thing undreamt of—now astronomers reckon it as of equal value with the telescope, while chemists find it indispensable to their researches. Who shall say that the next twenty years may not witness some invention of equal importance, which shall throw upon us a fresh flood of light from some unexpected quarter? If then the principle which has hitherto been maintained is correct, that all our difficulties arise from interpretations based upon insufficient knowledge, but maintained as if of equal authority with the record itself, there is a great danger lest after a time the same difficulty should recur—that the discovery of fresh facts may discredit interpretations based upon our present knowledge. Any interpretation therefore to which we may be led by the scientific views at present entertained, must be regarded as only provisional and tentative, liable at any time to be either confirmed, amended, or rejected, as fresh discoveries may be made.

Before we enter upon a detailed examination of the records of the several days, there are two preliminary points to which attention must be directed. We shall have to make frequent reference to "law." It will be well that the sense in which the term is used should be made clear. The account of the First Day's Work will lead to the recent theory of the Correlation of Forces. As this is probably a new subject to many, some previous explanation of it will be necessary.

SECTION 1. OF LAW. [Footnote: This subject is fully treated in the Duke of Argyll's "Reign of Law.">[

Law, in its original and proper sense, is the expression to an inferior of the will of a superior, which the inferior has it in his power to obey or to resist, but resistance to which entails a penalty more or less severe, in proportion to the moral turpitude, or the injurious consequences of the act of disobedience. In this its strict sense the law can only exist in connection with beings possessed of reason to understand it, of power to obey it, and of free will to determine whether they will obey it or not. When these three conditions are absent law can have no existence. But the result of perfect law, perfectly obeyed, would be perfect order. Hence the observation of perfect order leads, by a reversed process, to the supposition of some law of which that order is the result. Hence arose in the first instance the term "natural laws," or "laws of nature." Events were found to follow each other in a uniform way, and this uniformity was thus sought to be accounted for. Probably in the minds of those by whom the word was thus applied in the first instance Nature was not the mere abstraction it is now, but an unseen power—Deity or subordinate to Deity— working consciously and with design.

[Footnote: Mr. Darwin, especially in the "Origin of Species," seems continually to betray the existence of this feeling in his own mind. Though he from time to time reminds us that by Nature he means nothing but the aggregate of sequences of events, or laws, he yet frequently speaks of Nature in a way which is applicable only to an intelligent worker.]

But this feeling has disappeared, and now we are told that natural law is "the observed sequence of events." In this case, then, the true meaning of the word is entirely lost—it is no longer possible to speak of law as the cause of any event.

But the old sense in which the word was applied to natural phenomena had in it far more of truth than the modern one. It was the imperfect expression of the great truth that God is a God of order—that there is a uniform procedure in His works, because in Him there is no change, no caprice. And it is of great importance to us that we should realize this truth, because we are dependent upon the laws of nature every moment of our lives. Every conscious act is performed under the conviction that the natural forces which that act calls forth will operate in a certain prescribed manner. But this conviction, though it restricts us to the limits of the possible, does not further impede the freedom of our will. To a certain extent we can choose what action we will perform, what forces we will call forth for that purpose, and what direction we will give them. Sometimes we can arrange our forces so that they will continue to act for a considerable time without any intervention from us; in other cases continued interference is necessary. But in all these cases there is no interruption of the law by which the working of these forces is regulated. We have then a limited control over these forces, and yet they are unchangeable in themselves, and in their mode of action.

When, however, we strive to ascend from our own works to those of God, we can no longer regard these forces as absolutely unchangeable. If they are practically so, it is because it is His Will that they should be so. It is this Will then which has its expression in the so-called laws of nature. The term now assumes a sense akin to, though not identical with, its original ethical sense. It is no longer a rule imposed by a superior on an inferior, but the rule by which the Supreme Being sees fit to order His own Work. While however we admit the possibility of law of this kind being changed, we have no reason to believe that in the universe with which we have to do any such change has ever taken place. But this does not preclude the possibility of Divine interference in the processes either of Creation or of Providence. New forces may from time to time be supplied, new directions may be given to existing forces, without any variation in the laws by which the action of those forces is regulated.

And if we believe that Creation was a progressive act, it is rather probable than otherwise that such interferences should take place. For a long period perhaps the uniformity of the work might lead us to forget the Being who was working; but times would arrive when definite stages of the work were accomplished, when higher developments of being were rendered possible, and in the introduction of those higher developments a something would be seen which could not be the result of the processes with which we had already become acquainted. Such interference would not in any way justify the supposition that the designs of the Author of Nature were changed, or that His original plan had proved defective. The more natural inference would be that they were a part of the plan from the first, but that the time for them was not then come.

It will be seen in the sequel that in all probability many of the special acts of Creation, mentioned in the Mosaic Record, are interferences of this kind; that for long periods of time matters advanced in a uniform manner; that the sequence of events was such as our own experience would lead us to anticipate; but that these periods were separated from one another by the introduction of new forces and new results. Of the former we may speak then as carried on under the operation of natural laws; the other may be described as special interferences not antagonistic, but supplementary, to natural laws, and forming part of the original design.