'Ah, Monsieur Lagnier,' she merrily exclaimed, 'this is not fair. I hoped to have been the first; and yet I am glad that you forestalled me,' she added, as she looked into the bright glistening eyes of the old hairdresser. 'My father has just arrived in town, Lucille,' she continued, after a short pause, 'and he is interested in you all. He offers André the porter's lodge at the château, and I came here immediately to tell you the good news. It is not very far from your old home, and I am sure you will like it. Do not forget to take with you this poor rose-tree; it looks like you, quite pale for want of air. There! you must not thank me,' she exclaimed, as Madame Delmont, André, and Lucille pressed eagerly forward to express their gratitude: 'it is I, rather, that should thank you. I never knew till now how very happy I might be.'
And as Adelaide de Varenne pronounced these words, a bright smile passed across her face. The old hairdresser gazed admiringly upon her, and doubted for a moment whether the extraordinary loveliness he saw owed any part of its charm to the lock of false hair.
CLOUDS OF LIGHT.
In March of the year 1843, a remarkable beam of light shot suddenly out from the evening twilight, trailing itself along the surface of the heavens, beneath the belt stars of Orion. That glimmering beam was the tail of a comet just whisked into our northern skies, as the rapid wanderer skirted their precincts in its journey towards the sun. To the watchful eyes of our latitudes, the unexpected visitant presented an aspect that was coy and modest in the extreme; its head, indeed, was scarcely ever satisfactorily in sight. But it dealt far otherwise with the more favoured climes of the south. At the Cape of Good Hope, it was seen distinctly in full daylight, and almost touching the solar disk; and at night appeared with the brilliancy of a first-class star, with a luminous band flowing out from it to a distance some hundred times longer than the moon's face is wide. Few persons who caught a glimpse of that shining tail, either as it fitfully revealed itself in our heavens, or as it steadily blazed upon the opposite hemisphere of the earth, were led to form adequate notions of the magnificence of the object they were contemplating. No one, unaided by the teaching of science, could have conceived that the streak of light, so readily compressed within the narrow limits of an eye-glance, stretched out 170 millions of miles in length.
The comet comes from regions of unknown remoteness, and rushes, with continually increasing speed, towards our own source of warmth and light—the genial sun. When it has reached within a certain distance of this object, it appears, however, to overshoot the mark of its desire, as if too ardent in the chase, and then sways round with fearful impetus, beginning reluctantly to settle out into space again, and moving with less and less velocity as it goes, until its misty form is once more withdrawn by distance from human sight. When the comet of 1813 swept round the sun in this way, it was so near to the shining surface of the solar orb, that it must have been rushing for the time through a temperature forty-seven thousand times higher than any which the torrid region of the earth ever feels. Such heat would have been twenty-four times more than enough to melt rock-crystal. The overburdened sense experiences a feeling of relief in the mere knowledge, that the comet passed this fiery ordeal as the lightning's flash might have done. In two short hours, it had shifted its place from one side to the other of the solar sphere. In sixty little minutes, it had moved from a region in which the heat was forty thousand times greater than the fiercest burning of the earth's torrid zone, into another, in which the temperature was four times less. The comet might well have a glowing tail as it came from such a realm of fire. Flames that were colder by many hundred times, would make the dull black iron shine with incandescent brightness.
As, however, it is the comet's nature to guard its ornamental appendages with jealous care, it may be conceived that this tail of 170 million miles might prove a somewhat troublesome travelling companion in so rapid a journey. Comets always turn their tails prudentially out of harm's way as they whisk through the neighbourhood of the solar blaze. In whatever direction these bodies may be moving, they are always seen to project their caudal beams directly from the sun. Imagine the case of a rigid straight stick, held by one end in the hand, and brandished round through a half-circle. The outer end of the stick would move through a considerable sweep. If the stick were 170 million miles long, the extent of the sweep would be not less than 500 million miles! Through such a stupendous curve did the comet of 1843 whirl its tail in two little hours as it rounded the solar orb. It is hardly possible to believe, that one and the same material substance could have been subjected to the force of such motion without being shattered into a myriad fragments. Sir John Herschel very beautifully suggests, that the comet's tail, during this wonderful perihelion passage, resembled a negative shadow cast beyond the comet, rather than a substantial body; a momentary impression made upon the luminiferous ether where the solar influence was in temporary obscuration. But this suggestion can only be received as an ingenious and expressive hint; it cannot be taken as an explanation. There is as much difficulty, as will be presently seen, in the way of admitting that comets have shadows of any kind, as there would be in compassing the idea that bodies of enormous length can be whirled round through millions of miles in the minute. The truth is, the comet's tail is yet an unguessed puzzle, and vexes even the wits of the wise. It keeps grave men seated on the horns of a dilemma, so long as their attention is fixed upon its capricious charms.
The comet's tail is always thrown out away from the sun, just as the shadow of an opaque body in the same position would be. But this is not all that can be said of it. It is not only cast away from the sun: it is really cast by the sun—shadow-like, although not of the nature of shadow. It only appears when the comet gets near to the sun's effulgence, and is lost altogether when that body gets far from the great source of mundane light and heat. It is raised from the comet's body, by the power of sunshine, as mist is from damp ground. When Halley's Comet of 1682 approached the fierce ordeal of its perihelion position, the exhalation of its tail was distinctly perceived. First, little jets of light streamed out towards the sun, as if bursting forth elastically under the influence of the scorching blaze; very soon these streams were stopped, and turned backwards by the impulse of some new force, and as they flowed in this fresh direction, became the diverging streaks of the tail. Not only a vapour-forming power, but also a vapour-drifting power, is brought into play in the process of tail formation; and this latter must be some occult agent of considerable interest in a scientific point of view, as well as of considerable importance in a dynamic one, for it is a principle evidently antagonistic to the great prevailing attribute of gravitation, so universally present in matter. The comet's tail is the only substance known that is repelled instead of being attracted by the sun.
The repulsive power to which the development of the comet's tail is due, is one of extraordinary energy. The comet of 1680 shot out its tail through something like 100 million miles in a couple of days. Most probably, much of the matter that is thus thrown off from the cometic nucleus is never collected again, but is dissipated into space, and lost for ever to the comet. The tail of the comet of 1680 was seen in its greatest brilliancy soon before the solar approach; this was, however, an exception to the general rule. Comets nearly always have the finest tails, and present altogether the most beautiful appearance, immediately after they have been in the closest proximity to the sun.