“So he was,” said Mr Cunningham, “if not the most so. His motto, you know, as Pope, was Lux upon Lux—Light upon Light.”

“No, no,” said Mr Fogarty eagerly. “I think you’re wrong there. It was Lux in Tenebris, I think—Light in Darkness.”

“O yes,” said Mr M’Coy, “Tenebrae.”

“Allow me,” said Mr Cunningham positively, “it was Lux upon Lux. And Pius IX. his predecessor’s motto was Crux upon Crux—that is, Cross upon Cross—to show the difference between their two pontificates.”

The inference was allowed. Mr Cunningham continued.

“Pope Leo, you know, was a great scholar and a poet.”

“He had a strong face,” said Mr Kernan.

“Yes,” said Mr Cunningham. “He wrote Latin poetry.”

“Is that so?” said Mr Fogarty.

Mr M’Coy tasted his whisky contentedly and shook his head with a double intention, saying: