It has been written many times in history that the most trivial things have changed the destiny of nations. A famous preacher once made the declaration that “there are no such things as little things.� And so this tiny rubber stopper for a miniature bottle, not so large as the end of one’s finger, proved to be the great thing of immediate necessity.

If you should apply to a chemist who knew you, and should induce him to supply you with a bottle of chloroform, he would use just such a stopper as that one was in putting it up for your use.

Not but what the same sort of a stopper is used for many other purposes than sealing bottles of chloroform against the escape of fumes.

But conditions are regulated and understood more or less perfectly, by comparisons and circumstances; for instance, the presence of chloroform in that room, at the time when Mr. Lynne was induced or compelled to leave it, explained many things hitherto unexplainable.

It accounted in part for the finding of the handkerchief on the floor beside the chair upon which the woman had presumably seated herself.

It accounted, unquestionably, for the diamond star that Nick found in the upholstery of Lynne’s chair, since, without doubt, it had been dropped there while the chloroform was being administered; while there was the semblance of a struggle going on between the man and the woman; and it must be remembered that Lynne, in his weakened condition resulting from his long illness, could have been no match in strength for Madge Babbington, even if she was a woman.

But none of these considerations was the important one which the discovery of the article suggested to the active mind of the detective; nor was it the rubber stopper itself that brought about the suggestion.

It was the place where Patsy found it.

In considering that, and in arriving at the reasons that Nick Carter had for his immediate conclusions, we must read the thoughts that flashed through his mind the instant the stopper was shown to him, and when Patsy indicated where he had found it.

Timothy Tucker, the gardener, had stated that the woman who had passed him on the path between the gate and the house wore a long coat like those he had seen worn by women when they were motoring; hence, a long, linen duster.