Milady knew she might be watched, so she continued her prayers to the end; and it appeared to her that the soldier who was on duty at her door did not march with the same step, and seemed to listen.  For the moment she wished nothing better.  She arose, came to the table, ate but little, and drank only water.

An hour after, her table was cleared; but Milady remarked that this time Felton did not accompany the soldiers.  He feared, then, to see her too often.

She turned toward the wall to smile—­for there was in this smile such an expression of triumph that this smile alone would have betrayed her.

She allowed, therefore, half an hour to pass away; and as at that moment all was silence in the old castle, as nothing was heard but the eternal murmur of the waves—­that immense breaking of the ocean—­with her pure, harmonious, and powerful voice, she began the first couplet of the psalm then in great favor with the Puritans: 

“Thou leavest thy servants, Lord,
To see if they be strong;
But soon thou dost afford
Thy hand to lead them on.”

These verses were not excellent—­very far from it; but as it is well known, the Puritans did not pique themselves upon their poetry.

While singing, Milady listened.  The soldier on guard at her door stopped, as if he had been changed into stone.  Milady was then able to judge of the effect she had produced.

Then she continued her singing with inexpressible fervor and feeling.  It appeared to her that the sounds spread to a distance beneath the vaulted roofs, and carried with them a magic charm to soften the hearts of her jailers.  It however likewise appeared that the soldier on duty—­a zealous Catholic, no doubt—­shook off the charm, for through the door he called:  “Hold your tongue, madame!  Your song is as dismal as a ‘De profundis’; and if besides the pleasure of being in garrison here, we must hear such things as these, no mortal can hold out.”

“Silence!” then exclaimed another stern voice which Milady recognized as that of Felton.  “What are you meddling with, stupid?  Did anybody order you to prevent that woman from singing?  No.  You were told to guard her—­to fire at her if she attempted to fly.  Guard her!  If she flies, kill her; but don’t exceed your orders.”

An expression of unspeakable joy lightened the countenance of Milady; but this expression was fleeting as the reflection of lightning.  Without appearing to have heard the dialogue, of which she had not lost a word, she began again, giving to her voice all the charm, all the power, all the seduction the demon had bestowed upon it: 

  “For all my tears, my cares,
    My exile, and my chains,
  I have my youth, my prayers,
    And God, who counts my pains.”

Her voice, of immense power and sublime expression, gave to the rude, unpolished poetry of these psalms a magic and an effect which the most exalted Puritans rarely found in the songs of their brethren, and which they were forced to ornament with all the resources of their imagination.  Felton believed he heard the singing of the angel who consoled the three Hebrews in the furnace.