As she spoke, there came, indeed, one of those tremendous flashes of lightning that literally wrap the whole sky in flame, and, for the brief space that it endured, lighted up every part of the inside of the chapel, with a splendour that was painful to the eye. At the same time Alice, who still stood by the door, saw clearly the brighter waving line of more intense fire which accompanied the broad flash dart from a spot nearly above their heads, and streaming downward with fierce rapidity, strike one of the noblest trees on the edge of the wood below, and tear it in one moment into atoms. She almost fancied she could hear the rending groan of the stout oak, as it was shivered by the bolt of heaven; but nearly in the same instant the thunder followed, with a sound as if a thousand rocks had been cast on the roof above their heads; and another and another flash succeeded, before the report of the first had died away. Then came a momentary pause--calm, heavy, and silent, without a breath of air to stir the boughs, or to relieve the sultry oppressiveness of the atmosphere, and without a sound, save the fall of an occasional drop of rain.

The duration of this state of repose was but brief. The whole air over the forest seemed surcharged with electricity; and in a moment after, with a loud whizzing noise, not unlike that of a musket bullet when it passes near the head, a large ball of fire rushed rapidly by the chapel, in a line raised not more than a few yards above the ground, and pitched upon the point of a rock at a little distance below, where, after quivering and wavering for a moment, it broke into a thousand fragments with a loud explosion, and vanished entirely. The lightning and the thunder now succeeded each other so quickly, that there seemed scarcely an instant's interval; and flash after flash, roar after roar, continued without intermission, while every now and then the sight of a tree rent to pieces in the distant prospect marked the work of the lightning; and the forest, and the rocks, and the hills echoed and re-echoed the thunder, so that the sound became absolutely incessant.

This had continued for about half an hour, and still Alice of Imbercourt had remained gazing out upon the scene, as well as the old cavalier, who accompanied them as their principal attendant, when she suddenly exclaimed--"Good God! how extraordinary! There seems to be a thick cloud gathering upon the edge of the wood, and rolling up the hill towards us, sweeping the ground as it comes. Holy Virgin! the lightning is flashing out of it like that from the sky! This is very terrible, indeed!"

"Come back, Alice, I beseech--I entreat!" exclaimed the princess: "you may lose your sight or your life--you are tempting your fate."

But Alice did not seem to hear, for she still continued gazing out from the door, although it was very evident that she now had also taken alarm.

"Now, gracious God, be merciful unto us!" she exclaimed; "for this is the most terrible thing I ever saw! It is fast rolling up the hill!"

"Come away, lady, come away," cried the old cavalier, seizing her by the arm, and leading her from the door; "this is no sight to look upon;" and he drew her back towards the princess.

Alice once more turned her head to gaze; and then, overcome with what she saw, she cast herself down upon her knees, throwing her arms around Mary, as if to protect her from the approaching destruction, exclaiming: "Oh, my princess! my princess! God protect thee in this terrible hour!"

Mary's hand was very cold; but, in the moment of great danger she showed herself more calm and firm than her more daring companion. "God will protect me," she said, in a soft low voice, "if such be His good pleasure; and if not, His will be done."

As she spoke, a tremendous flash illuminated the whole of the inside of the building, accompanied--not followed--by a crash, as if two worlds had been hurled together in their course through space.