Filled with gratitude for the trust he reposed in her, Dorothy took her leave, and the two workmen immediately abandoned their shop for the night, leaving the door wide open behind them to let out the vapours of the fire-engine, in the confidence that no unlicensed foot would dare to cross the threshold, and betook themselves to the powder-mill, where they continued at work the greater part of the night. His lordship was unfavourable to the storing of powder because of the danger, seeing they could, on his calculation, from the materials lying ready for mixing, in one week prepare enough to keep all the ordnance on the castle walls busy for two. But indeed he had not such a high opinion of gunpowder but that he believed engines for projection, more powerful as well as less expensive, could be constructed, after the fashion of ballista or catapult, by the use of a mode he had discovered of immeasurably increasing the strength of springs, so that stones of a hundredweight might be thrown into a city from a quarter of a mile's distance without any noise audible to those within. It was this device he was brooding over when Dorothy came upon him by the arblast. Nor did the conviction arise from any prejudice against fire-arms, for he had, among many other wonderful things of the sort, in cannons, sakers, harquebusses, muskets, musquetoons, and all kinds, invented a pistol to discharge a dozen times with one loading, and without so much as new priming being once requisite, or the possessor having to change it out of one hand into the other, or stop his horse. One who had happened to see lord Herbert as he went about within his father's walls, busy yet unhasting, earnest yet cheerful, rapid in all his movements yet perfectly composed, would hardly have imagined that a day at a time, or perhaps two, was all he was now able to spend there, days which were to him as breathing-holes in the ice to the wintered fishes. For not merely did he give himself to the enlisting of large numbers of men, but commanded both horse and foot, meeting all expenses from his own pocket, or with the assistance of his father. A few months before the period at which my story has arrived, he had in eight days raised six regiments, fortified Monmouth and Chepstow, and garrisoned half-a-dozen smaller but yet important places. About a hundred noblemen and gentlemen whom he had enrolled as a troop of life-guards, he furnished with the horses and arms which they were unable to provide with sufficient haste for themselves. So prominent indeed were his services on behalf of the king, that his father was uneasy because of the jealousy and hate it would certainly rouse in the minds of some of his majesty's well-wishers--a just presentiment, as his son had too good reason to acknowledge after he had spent a million of money, besides the labour and thought and dangerous endeavour of years, in the king's service. CHAPTER XVIII. MOONLIGHT AND APPLE-BLOSSOMS.