APPENDIX, 13 443

machine. The fault is, at any rate, far less in the system than in the imperfection of its administration; and had it been otherwise, the terms in which Mr. Fergusson speaks of it are hardly decorous in one who can but be imperfectly acquainted with its working. They are sufficiently answered by the structure of the essay in which they occur; for if the high powers of mind which its author possesses had been subjected to the discipline of the schools, he could not have wasted his time on the development of a system which their simplest formulæ of logic would have shown him to be untenable.

Mr. Fergusson will, however, find it easier to overthrow his system than to replace it. Every man of science knows the difficulty of arranging a reasonable system of classification, in any subject, by any one group of characters; and that the best classifications are, in many of their branches, convenient rather than reasonable: so that, to any person who is really master of his subject, many different modes of classification will occur at different times; one of which he will use rather than another, according to the point which he has to investigate. I need only instance the three arrangements of minerals, by their external characters, and their positive or negative bases, of which the first is the most useful, the second the most natural, the third the most simple; and all in several ways unsatisfactory.

But when the subject becomes one which no single mind can grasp, and which embraces the whole range of human occupation and inquiry, the difficulties become as great, and the methods as various, as the uses to which the classification might be put; and Mr. Fergusson has entirely forgotten to inform us what is the object to which his arrangements are addressed. For observe: there is one kind of arrangement which is based on the rational connection of the sciences or arts with one another; an arrangement which maps them out like the rivers of some great country, and marks the points of their junction, and the direction and force of their united currents; and this without assigning to any one of them a superiority above another, but considering them all as necessary members of the noble unity of human science and effort. There is another kind of classification which contemplates the order of succession in which they might most usefully be presented to a single mind, so that the given mind should obtain the most effective and available knowledge of them all: and, finally, the most usual classification contemplates the powers of mind which they each require for their pursuit, the objects to which they are addressed, or with which they are concerned; and assigns to each of them a rank superior or inferior, according to the nobility of the powers they require, or the grandeur of the subjects they contemplate.

Now, not only would it be necessary to adopt a different classification with respect to each of these great intentions, but it might be found so even to vary the order of the succession of sciences in the case of every several mind to which they were addressed; and that their rank would also vary with the power and specific character of the mind engaged upon them. I once heard a very profound mathematician remonstrate against the impropriety of Words-worth’s receiving a pension from government, on the ground that he was “only a poet.” If the study of mathematics had always this narrowing effect upon the sympathies, the science itself would need to be deprived of the rank usually assigned to it; and there could be no doubt that, in the effect it had on the mind of this man, and of such others, it was a very contemptible science indeed. Hence, in estimating the real rank of any art or science, it is necessary for us to conceive it as it would be grasped by minds of every

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