"No, Mr. Narkom, no. As an instrument of death the icicle is _not_ new," said Cleek, answering the superintendent's question as the limousine swung out through the gates of Heatherington Hall and faced the long journey back to London. "If you will look up the records of that energetic female, Catherine de Medici, Queen of France, you will find that she employed it in that capacity upon two separate occasions; and coming down to more modern times, you will also find that in the year 1872 the Russian, Lydia Bolorfska, used it at Galitch, in the province of Kostroma, to stab her sleeping husband. But as a projectile, it _is_ new--as a _successful_ projectile, I mean--for there have been many attempts made, owing to its propensity to dissolve after use, to discharge it from firearms, but never in one single instance have those attempts resulted in success. The explosion has always resulted in shivering and dispersing it in a shower of splinters as it leaves the muzzle of the weapon. There can be no doubt, however, that could it be propelled in a perfectly horizontal position, the power behind it would, in spite of its brittle nature, drive it through a pine board an inch thick. But, as I have said, the motive power always defeats the object by landing it against the target in a mass of splinters." "I see. And the Jap got over that by employing a cross-bow; and that, of course, did the trick." "No. I doubt if he would have been able to put enough power behind that to drive it into the man's body with deadly effect, if, indeed, he could make it enter it at all. Where Ojeebi scored over all others lay in the fact that with his plan there was no necessity to have the icicle enter the victim's body at all. He required nothing more than just sufficient power of propulsion to break the skin and establish contact with the blood, and then that hellish compound on the point of the projectile could be depended upon to do the rest. It did, as you know, and then dropped to the floor and melted away, leaving nothing but a little puddle of water behind it." "But, Cleek, my dear chap, how do you account for the fact that when the doctor came to analyze that water he found no trace of the poison in it?"