“Don’t ask me the reason of that,” he smiled, noticing my wonder. “I have no idea why the veins and heart are tinted, but they always are. Yesterday I tried one of Geneviève’s goldfish⁠—there it is.”

The fish looked as if sculptured in marble. But if you held it to the light the stone was beautifully veined with a faint blue, and from somewhere within came a rosy light like the tint which slumbers in an opal. I looked into the basin. Once more it seemed filled with clearest crystal.

“If I should touch it now?” I demanded.

“I don’t know,” he replied, “but you had better not try.”

“There is one thing I’m curious about,” I said, “and that is where the ray of sunlight came from.”