Mystics

"John," he said, tremulously, "I want you to swear to me by the Sign that you will not touch my body -- nor anything on my body -- till the Arch-Councillor comes! Swear, as you hope for your own happiness!" A wild illumination spread over his face; the unpleasant fanatical light showed again in his eyes.
For a moment John looked at him; then stirred by his own emotions, by the new pang of self-reproach and gratitude towards this half-crazy man so near his end, he went forward and touched the small octagonal symbol that gleamed in the light.

"I swear -- by the Sign!" he said, in a low, level voice. And almost as the words escaped him, the chain slipped from old Henderson's fingers, his jaw dropped, and his head fell forward on his chest.