Isabelle sat for a long time perfectly motionless in her luxurious chamber, sunk in a sad reverie, apparently entirely oblivious of the glow of light, warmth, and comfort that closed her in—­glancing up occasionally at the portrait over the chimney-piece, which seemed to be smiling down upon her and promising her protection and peace, while it more than ever reminded her of some dear face she had known and loved long ago.  After a time, however, her mood changed.  She grew restless, and rising, began to wander aimlessly about the room; but her uneasiness only increased, and finally, in desperation, she resolved to venture out into the corridor and look about her, no matter at what risk.  Anything would be better than this enforced inactivity and suspense.  She tried the door with a trembling hand, dreading to find herself locked in, but it was not fastened, and seeing that all was dark outside, she took up a small lamp, that had been left burning on a side table, and boldly setting forth, went softly down the long flight of stairs, in the hope of finding some means of exit from the chateau on the lower floor.  At the foot of the stairs she came to a large double door, one leaf of which yielded easily when she timidly tried to open it, but creaked dolefully as it turned on its hinges.  She hesitated for a moment, fearing that the noise would alarm the servants and bring them out to see what was amiss; but no one came, and taking fresh courage, she moved on and passed into a lofty, vaulted hall, with high-backed, oaken benches ranged against the tapestry-covered walls, upon which hung several large trophies of arms, and sundry swords, shields, and steel gauntlets, which caught and flashed back the light from her lamp as she held it up to examine them.  The air was heavy, chilly, and damp.  An awful stillness reigned in this deserted hall.  Isabelle shivered as she crept slowly along, and nearly stumbled against a huge table, with massive carved feet, that stood in the centre of the tesselated marble pavement.  She was making for a door, opposite the one by which she had entered; but, as she approached it, was horror-stricken when she perceived two tall men, clad in armour, standing like sentinels, one on either side of it.  She stopped short, then tried to turn and fly, but was so paralyzed with terror that she could not stir, expecting every instant that they would pounce upon her and take her prisoner, while she bitterly repented her temerity in having ventured to leave her own room, and vainly wished herself back by the quiet fireside there.  Meanwhile the two dread figures stood as motionless as herself—­the silence was unbroken, and “the beating of her own heart was the only sound she heard.”  So at last she plucked up courage to look more closely at the grim sentinels, and could not help smiling at her own needless alarm, when she found that they were suits of armour, indeed, but without men inside of them—­just such as one sees standing about in the ancient royal palaces of France.