The volume is so meritorious, that we have not looked for faults; but, as we turned the leaves, we noticed a few such as the following:--that the river Dove, in England, should be mentioned as "noted for its picturesque scenery," and yet its association with Izaak Walton and Charles Cotton, its chief glory, be passed unnoticed; and that Discord should be defined as, "_in music_, a combination of sounds inharmonious and unpleasing to the ear"; whereas, although, out of music, discord means a sound inharmonious and displeasing to the ear, in music discord is the golden bond of harmony, the life and soul of expression, that for which the ear yearns with a yearning that is inexpressible, and enjoys with poignancy of pleasure. We asked, too, if Thomas Dowse should be honored with a page and a half, in which his fall from a tree, his rheumatic fever, and the head winds which prevented him from visiting Europe are chronicled,--while the eminent French painter, Couture, whose use of the pallet is marked by such striking originality, that it has produced an impression upon the works of a generation of painters, has twelve lines! And we can hardly be accused of hypercriticism, in directing the attention of the editors to a sentence like the following, in the article _Diptera_, p. 498, 2d col.:--"Though _this order_ contains the bloodthirsty mosquito, the disgusting flesh-fly, and many insects depositing their eggs in the bodies of living animals, _it_ is a most useful one, supplying food to insectivorous birds, and _themselves_ [who? what?] consuming decomposing animal and vegetable substances," etc. But these are instances of oversight in not very important matters, or of inaccuracy of expression, or of difference of judgment between the editors and ourselves as to plan, which even in our judgment do not affect the value of the work in which they occur. Graver errors could be found in almost every work of great scope that ever came from the press. We indicate them that we may afford some help toward a nearer approximation to that perfection which is unattainable. _Tom Brown at Oxford: a Sequel to School-Days at Rugby._ By THOMAS HUGHES, etc. Part I. Boston: Ticknor & Fields. 1859.