And the look of the place; the old, old fascinating reek of it; the click of glass on glass; the whirring flare of freshly-lighted Bunsen burners! In vain Brenton tried his best to deaden his senses to the lure of it; but it was of no use. The charm was in his blood; it would not down. The smell of hydrogen sulphide was dearer to him than any incense; his fingers shut upon the test-tubes with a greedier clutch than any they had ever given to The Book of Common Prayer. And yet, by some curious mental process, that book of prayer, its age-old liturgies, never rang more sonorous in his mind than when they echoed in his ears above the whirring of the Bunsen burners. Science was his passion, not theology; but science aroused in him a spirit of reverential worship for his Creator as mere theology had never done. He caught himself, one day, even, with his eyes glued fast to the professor's deft manipulations, while he himself was saying, half aloud,-- "The Lord is in His holy temple." And then, next in line, "When man doeth that which is lawful, he shall save his soul alive." Law everywhere! And then, quite as a corollary, life! But how dared he, how dared any man, preach from a pulpit, when it was given to him to toil in a laboratory, instead? Which was the greater reverence: to exploit one's own belief; or, open-minded, to be searching for a clearer outlook upon truth? And so, bit by bit, the lure of the laboratory beckoned to Scott Brenton, just as, bit by bit, his wife and his profession lost their hold upon him; lost it, to his regret, lost it by their own failure to supply his highest needs. As to the laboratory itself and all it offered, it was no mean achievement for it to make good to Brenton all the other lacks, whether in his professional career, or in his wife herself. Indeed, he turned to science, his first great love, as some other men might have turned to the wooing society of a stage soubrette. As the weeks went on, and the tentacles of his priesthood, coming into contact with his doubts and failing to penetrate them, by slow degrees relaxed their grip on him, by those same slow degrees, he felt his manhood yielding to the insistent demands of nature's law upon her votaries. As yet, however, he had no realization that now the ultimate result was but a matter of time. Professor Opdyke realized it, though, quite clearly; and he laid his plans accordingly.