Noteworthy illustration we have lately found in the record of the experiences of an Edinburgh detective, an Irishman of the name of McLevy. That the service of the imagination in the solution of the problems peculiar to his calling is well known to him, we could adduce many proofs. He recognizes its function in the construction of the theory which shall unite this and that hint into an organic whole, and he expressly sets forth the need of a theory before facts can be serviceable:-- “I would wait for my ‘idea’.... I never did any good without mine.... Chance never smiled on me unless I poked her some way; so that my ‘notion,’ after all, has been in the getting of it my own work only perfected by a higher hand.” “On leaving the shop I went direct to Prince’s Street,--of course with an idea in my mind; and somehow I have always been contented with one idea when I could not get another; and the advantage of sticking by one is, that the other don’t jostle it and turn you about in a circle when you should go in a straight line.” (Footnote: Since quoting the above I have learned that the book referred to is unworthy of confidence. But let it stand as illustration where it cannot be proof.)] The region belonging to the pure intellect is straitened: the imagination labours to extend its territories, to give it room. She sweeps across the borders, searching out new lands into which she may guide her plodding brother. The imagination is the light which redeems from the darkness for the eyes of the understanding. Novalis says, “The imagination is the stuff of the intellect”--affords, that is, the material upon which the intellect works. And Bacon, in his “Advancement of Learning,” fully recognizes this its office, corresponding to the foresight of God in this, that it beholds afar off. And he says: “Imagination is much akin to miracle-working faith.” [Footnote: We are sorry we cannot verify this quotation, for which we are indebted to Mr. Oldbuck the Antiquary, in the novel of that ilk. There is, however, little room for doubt that it is sufficiently correct.]