He did arrive, unusually pallid, almost haggard; and Selwyn, who met him at the station and drove him over from Wyossett, ventured at last to give the boy a chance. But Gerald remained utterly unresponsive--stolidly so--and the other instantly relinquished the hope of any confidence at that time--shifting the conversation at once to the object and reason of Gerald's coming, and gaily expressing his belief that the time was very near at hand when Chaosite would figure heavily in the world's list of commercially valuable explosives. It was early in August that Selwyn had come to the conclusion that his Chaosite was likely to prove a commercial success. And now, in September, his experiments had advanced so far that he had ventured to invite Austin, Gerald, Lansing, and Edgerton Lawn, of the Lawn Nitro-Powder Company, to witness a few tests at his cottage laboratory on Storm Head; but at the same time he informed them with characteristic modesty that he was not yet prepared to guarantee the explosive. About noon his guests arrived before the cottage in a solemn file, halted, and did not appear overanxious to enter the laboratory on Storm Head. Also they carefully cast away their cigars when they did enter, and seated themselves in a nervous circle in the largest room of the cottage. Here their eyes instantly became glued to a great bowl which was piled high with small rose-tinted cubes of some substance which resembled symmetrical and translucent crystals of pink quartz. That was Chaosite enough to blow the entire cliff into smithereens; and they were aware of it, and they eyed it with respect. First of all Selwyn laid a cubic crystal on an anvil, and struck it sharply and repeatedly with a hammer. Austin's thin hair rose, and Edgerton Lawn swallowed nothing several times; but nobody went to heaven, and the little cube merely crumbled into a flaky pink powder. Then Selwyn took three cubes, dropped them into boiling milk, fished them out again, twisted them into a waxy taper, placed it in a candle-stick, and set fire to it. The taper burned with a flaring brilliancy but without odour. Then Selwyn placed several cubes in a mortar, pounded them to powder with an iron pestle, and, measuring out the tiniest pinch--scarcely enough to cover the point of a penknife, placed a few grains in several paper cartridges. Two wads followed the powder, then an ounce and a half of shot, then a wad, and then the crimping. The guests stepped gratefully outside; Selwyn, using a light fowling-piece, made pattern after pattern for them; and then they all trooped solemnly indoors again; and Selwyn froze Chaosite and boiled it and baked it and melted it and took all sorts of hair-raising liberties with it; and after that he ground it to powder, placed a few generous pinches in a small hand-grenade, and affixed a primer, the secret composition of which he alone knew. That was the key to the secret--the composition of the primer charge.