[8] "_Memnonian_."--For the sake of many readers, whose hearts may go along earnestly with a record of infant sorrow, but whose course of life has not allowed them much leisure for study, I pause to explain--that the head of Memnon, in the British Museum, that sublime head which wears upon its lips a smile coextensive with all time and all space, an Aeonian smile of gracious love and Pan-like mystery, the most diffusive and pathetically divine that the hand of man has created, is represented, on the authority of ancient traditions, to have uttered at sunrise, or soon after as the sun's rays had accumulated heat enough to rarefy the air within certain cavities in the bust, a solemn and dirge-like series of intonations; the simple explanation being, in its general outline, this-- that sonorous currents of air were produced by causing chambers of cold and heavy air to press upon other collections of air, warmed, and therefore rarefied, and therefore yielding readily to the pressure of heavier air. Currents being thus established by artificial arrangements of tubes, a certain succession of notes could be concerted and sustained. Near the Red Sea lies a chain of sand hills, which, by a natural system of grooves inosculating with each other, become vocal under changing circumstances in the position of the sun, &c. I knew a boy who, upon observing steadily, and reflecting upon a phenomenon that met him in his daily experience, viz., that tubes, through which a stream of water was passing, gave out a very different sound according to the varying slenderness or fulness of the current, devised an instrument that yielded a rude hydraulic gamut of sounds; and, indeed, upon this simple phenomenon is founded the use and power of the stethoscope. For exactly as a thin thread of water, trickling through a leaden tube, yields a stridulous and plaintive sound compared with the full volume of sound corresponding to the full volume of water, on parity of principles, nobody will doubt that the current of blood pouring through the tubes of the human frame will utter to the learned ear, when armed with the stethoscope, an elaborate gamut or compass of music recording the ravages of disease, or the glorious plenitudes of health, as faithfully as the cavities within this ancient Memnonian bust reported this mighty event of sunrise to the rejoicing world of light and life; or, again, under the sad passion of the dying day, uttered the sweet requiem that belonged to its departure. [9] "_Everlasting Jew_."--_Der ewige Jude_--which is the common German expression for "The Wandering Jew," and sublimer even than our own. [10] First Epistle to Corinthians, chap. xv., beginning at ver. 20.