'On the chance that it might tell you what poison she had given to Mrs. Wagner?'
'Well guessed, Mr. Glenney!'
'And you have actually discovered the meaning of these hieroglyphics?'
He laid a second sheet of paper on the table.
'There is but one cipher that defies interpretation,' he said. 'If you and your correspondent privately arrange to consult the same edition of the same book, and if your cipher, or his, refers to a given page and to certain lines on that page, no ingenuity can discover you, unaided by a previous discovery of the book. All other ciphers, so far as I know, are at the mercy of skill and patience. In this case I began (to save time and trouble) by trying the rule for interpreting the most simple, and most elementary, of all ciphers—that is to say, the use of the ordinary language of correspondence, concealed under arbitrary signs. The right way to read these signs can be described in two words. On examination of the cipher, you will find that some signs will be more often repeated than others. Count the separate signs, and ascertain, by simple addition, which especial sign occurs oftenest—which follows next in point of number—and so on. These comparisons established, ask yourself what vowel occurs oftenest, and what consonant occurs oftenest, in the language in which you suppose the cipher to be written. The result is merely a question of time and patience.'
'And this is the result?' I said, pointing to the second sheet of paper.
'Read it,' he answered; 'and judge for yourself.'
The opening sentence of the interpreted cipher appeared to be intended by Doctor Fontaine to serve the purpose of a memorandum; repeating privately the instructions already attached by labels to the poison called 'Alexander's Wine,' and to its antidote.
The paragraphs that followed were of a far more interesting kind. They alluded to the second poison, called 'The Looking-Glass Drops;' and they related the result of one of the Professor's most remarkable experiments in the following words:—
VI
'The Looking-Glass Drops. Fatal Dose, as discovered by experiments on animals, the same as in the case of Alexander's Wine. But the effect, in producing death, more rapid, and more indistinguishable, in respect of presenting traces on post-mortem examination.
'After many patient trials, I can discover no trustworthy antidote to this infernal poison. Under these circumstances, I dare not attempt to modify it for medical use. I would throw it away—but I don't like to be beaten. If I live a little longer, I will try once more, with my mind refreshed by other studies.
'A month after writing these lines (which I have repeated in plain characters, on the bottle, for fear of accidents), I tried again—and failed again. Annoyed by this new disappointment, I did something unworthy of me as a scientific man.
'After first poisoning an animal with the Looking-Glass Drops, I administered a dose from the blue bottle, containing the antidote to Alexander's Wine—knowing perfectly well the different nature of the two poisons; expecting nothing of any scientific importance to follow; and yet trusting stupidly to chance to help me.
'The result was startling in the last degree. It was nothing less than the complete suspension of all the signs of life (as we know them) for a day, and a night, and part of another day. I only knew that the animal was not really dead, by observing, on the morning of the second day, that no signs of decomposition had set in—the season being summer, and the laboratory badly ventilated.
'An hour after the first symptoms of revival had astonished me, the creature was as lively again as usual, and ate with a good appetite. After a lapse of ten days, it is still in perfect health. This extraordinary example of the action and reaction of the ingredients of the poison and the ingredients of the antidote on each other, and on the sources of life, deserves, and shall have, the most careful investigation. May I live to carry the inquiry through to some good use, and to record it on another page!'
There was no other page, and no further record. The Professor's last scientific aspiration had not been fulfilled.
VII
'It was past midnight,' said the doctor, 'when I made the discovery, with which you are now acquainted. I went at once to Mr. Keller. He had fortunately not gone to bed; and he accompanied me to the Deadhouse. Knowing the overseer's private door, at the side of the building, I was able to rouse him with very little delay. In the excitement that possessed me, I spoke of the revival as a possible thing in the hearing of the servants. The whole household accompanied us to the Deadhouse, at the opposite extremity of the building. What we saw there, I am utterly incapable of describing to you. I was in time to take the necessary measures for keeping Mrs. Wagner composed, and for removing her without injury to Mr. Keller's house. Having successfully accomplished this, I presumed that my anxieties were at an end. I was completely mistaken.'
'You refer to Madame Fontaine, I suppose?'
'No; I refer to Jack. The poor wretch's ignorant faith had unquestionably saved his mistress's life. I should never have ventured (even if I had been acquainted with the result of the Professor's experiment, at an earlier hour) to run the desperate risk, which Jack confronted without hesitation. The events of the night (aggravated by the brandy that Schwartz had given to him) had completely overthrown the balance of his feeble brain. He was as mad, for the time being, as ever he could have been in Bedlam. With some difficulty, I prevailed on him to take a composing mixture. He objected irritably to trust me; and, even when the mixture had begun to quiet him, he was ungrateful enough to speak contemptuously of what I had done for him. 'I had a much better remedy than yours,' he said, 'made by a man who was worth a hundred of you. Schwartz and I were fools enough to give it to Mrs. Housekeeper, last night.' I thought nothing of this—it was one of the eccentricities which were to be expected from him, in his condition. I left him quietly asleep; and I was about to go home, and get a little rest myself—when Mr. Keller's son stopped me in the hall. 'Do go and see Madame Fontaine,' he said; 'Minna is alarmed about her mother.' I went upstairs again directly.'
'Had you noticed anything remarkable in Madame Fontaine,' I asked, 'before Fritz spoke to you?'
'I noticed, at the Deadhouse, that she looked frightened out of her senses; and I was a little surprised—holding the opinion I did of her—that such a woman should show so much sensibility. Mr. Keller took charge of her, on our way back to the house. I was quite unprepared for what I saw afterwards, when I went to her room at Fritz's request.
'Did you discover the resemblance to Mr. Keller's illness?'
'No—not till afterwards. She sent her daughter out of the room; and I thought she looked at me strangely, when we were alone. 'I want the paper that I gave you in the street, last night,' she said. I asked her why she wanted it. She seemed not to know how to reply; she became excited and confused. 'To destroy it, to be sure!' she burst out suddenly. 'Every bottle my husband left is destroyed—strewed here, there, and everywhere, from the Gate
