“I cannot give you at this moment,” replied Dr. Silence, turning to him, but undisturbed by the interruption, “a lecture on the nature and history of magic, but can only say that an Elemental is the active force behind the elements,—­whether earth, air, water, or fire,—­it is impersonal in its essential nature, but can be focused, personified, ensouled, so to say, by those who know how—­by magicians, if you will—­for certain purposes of their own, much in the same way that steam and electricity can be harnessed by the practical man of this century.

“Alone, these blind elemental energies can accomplish little, but governed and directed by the trained will of a powerful manipulator they may become potent activities for good or evil.  They are the basis of all magic, and it is the motive behind them that constitutes the magic ‘black’ or ‘white’; they can be the vehicles of curses or of blessings, for a curse is nothing more than the thought of a violent will perpetuated.  And in such cases—­cases like this—­the conscious, directing will of the mind that is using the elemental stands always behind the phenomena—­”

“You think that my brother—!” broke in the Colonel, aghast.

“Has nothing whatever to do with it—­directly.  The fire-elemental that has here been tormenting you and your household was sent upon its mission long before you, or your family, or your ancestors, or even the nation you belong to—­unless I am much mistaken—­was even in existence.  We will come to that a little later; after the experiment I propose to make we shall be more positive.  At present I can only say we have to deal now, not only with the phenomenon of Attacking Fire merely, but with the vindictive and enraged intelligence that is directing it from behind the scenes—­vindictive and enraged,”—­he repeated the words.

“That explains—­” began Colonel Wragge, seeking furiously for words he could not find quickly enough.

“Much,” said John Silence, with a gesture to restrain him.

He stopped a moment in the middle of his walk, and a deep silence came down over the little room.  Through the windows the sunlight seemed less bright, the long line of dark hills less friendly, making me think of a vast wave towering to heaven and about to break and overwhelm us.  Something formidable had crept into the world about us.  For, undoubtedly, there was a disquieting thought, holding terror as well as awe, in the picture his words conjured up:  the conception of a human will reaching its deathless hand, spiteful and destructive, down through the ages, to strike the living and afflict the innocent.

“But what is its object?” burst out the soldier, unable to restrain himself longer in the silence.  “Why does it come from that plantation?  And why should it attack us, or any one in particular?” Questions began to pour from him in a stream.

“All in good time,” the doctor answered quietly, having let him run on for several minutes.  “But I must first discover positively what, or who, it is that directs this particular fire-elemental.  And, to do that, we must first”—­he spoke with slow deliberation—­“seek to capture—­to confine by visibility—­to limit its sphere in a concrete form.”