But, some will ask, if one has true ideas, though derived from others--is not that knowledge? Yes, if he has ideas: but propositions expressing them are not enough: one may have many of these, and know but little. For example, let us suppose Locke right about the mind's coming into existence as a sheet of white paper--a man may receive this, and yet not know it. See how easily this may be tested. White paper will receive any impression you please: can the human mind receive the impression that two and two are five, or that a part is equal to the whole? Locke could have answered this, and seemed to save his theory. The borrower from Locke cannot. THE RESURRECTION FLOWER. If a traveller in Egypt were to bow before the Sphynx, and receive a nod in return, he could scarcely be more surprised than I was to-day, upon seeing a little, dried-up thing--the remains of what had once bloomed and faded ''mid beleaguering sands'--spring into life and beauty before my very eyes. All the Abbott Collection contains nothing more rare or curious. Old, perhaps, as Cheops, and apparently as sound asleep, it is startled at the touch of water, and, stretching forth its tiny petals, wakes into life as brightly as a new-born flower. No one could believe, upon looking at this little ball, hanging on its fragile stem, and resembling both in color and shape a shrunken poppy-head, or some of the acorn tribe, what magical results could arise from merely wetting its surface--yet so it is. Sleeping, but not dead, the flower is aroused by being for an instant immersed in water, and then supported in an upright position. Soon the upper fibres begin to stir. Slowly, yet visibly, they unfold, until, with petals thrown back in equidistant order, it assumes the appearance of a beautifully radiated, starry flower, not unlike some of the Asters in form. Resting a moment, it suddenly, as though inspired by some new impulse, throws its very heart to the daylight, curving back its petals farther still, and disclosing beauties undreamed of even in the loveliness of its first awakening. To say that, in general effect, its appearance resembles the passion-flower is to give but a poor description, and yet one searches in vain for a more fitting comparison. Lacking entirely the strong contrasts in color of the latter, it yet wears a halo of its own, unlike any other in the whole range of floral effects. When viewed through a powerful lens, the heart of the flower, which, to the naked eye, lies flooded in a warm, colorless light, assumes the most exquisite iridescent hues, far more beautiful than the defined tints of the passion-flower. Melting to the eye in its juiciness and delicacy, yet firm in its pure outline and rounded finish, it bears the same relation to that chosen type of the great Suffering, that peace bears to passion, or that promise bears to prayer.