Silence fell upon them and when it was broken it was again by Kitty.
"Tell me, is: the dog it was that died, a quotation?"
Waddington's lips outlined a smile and he was ready with his answer. But perhaps at that moment his sensibilities were abnormally acute. Kitty was not looking at him, but there was something about her expression which made him change his mind.
"If it is I don't know it," he answered warily. "Why?"
"Nothing. It crossed my mind. It had a familiar ring."
There was another silence.
"When you were alone with your husband," said Waddington presently, "I had a talk with the regimental surgeon. I thought we ought to have some details."
"Well?"
"He was in a very hysterical state. I couldn't really quite understand what he meant. So far as I can make out your husband got infected during the course of experiments he was making."
"He was always experimenting. He wasn't really a doctor, he was a bacteriologist; that is why he was so anxious to come here."