which had been published so far. But there were many other details of
the poisoning he was quite willing to discuss frankly.

"It was true about the jar of ammonia?" asked Kennedy.

"Yes," he answered. "It was standing on her dressing-table with the
note crumpled up in it, just as the papers said."

"And you have no idea why it was there?"

"I didn't say that. I can guess. Fumes of ammonia are one of the
antidotes for poisoning of that kind."

"But Vera Lytton could hardly have known that," objected Kennedy.

"No, of course not. But she probably did know that ammonia is good
for just that sort of faintness which she must have experienced after
taking the powder. Perhaps she thought of sal volatile, I don't know.
But most people know that ammonia in some form is good for faintness
of this sort, even if they don't know anything about cyanides and--"

"Then it was cyanide?" interrupted Craig.

"Yes," he replied slowly. It was evident that he was suffering great
physical and nervous anguish as the result of his too intimate
acquaintance with the poisons in question. "I will tell you precisely
how is was, Professor Kennedy. When I was called in to see Miss Lytton
I found her on the bed. I pried open her jaws and smelled the sweetish
odor of the cyanogen gas. I knew then what she had taken, and at the
moment she was dead. In the next room I heard some one moaning. The