If you open your mouth again, I'll drive my fist down your throat " The young man, or boy rather, -for he was not yet eighteen years old, -who made this very emphatic remark, was a stalwart, well-built youth, lithe of limb, elastic in movement, slender, straight, tall, with a rather thin face, upon which there was as yet no trace of coming beard, high cheek bones, and eyes that seemed almost to emit sparks of fire as their lids snapped rapidly together. He spoke in a low tone, without a sign of anger in his voice, but with a look of earnestness which must have convinced the person to whom he addressed his not very suave remark, that he really meant to do precisely what he threatened.