"Not in the least. She knew the use to which Jack had put her antidote, and (in her ignorance of chemistry) she was eager to be prepared for any consequences which might follow. Can you guess on what chance I calculated, when I consented to interpret the cipher?"

"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-Gla.s.s Drops;" and they related the result of one of the Professor's most remarkable experiments in the following words:--

VI

"The Looking-Gla.s.s 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 circ.u.mstances, 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-Gla.s.s 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 appet.i.te.

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 to the Deadhouse. Oh, I know what you think of me--I defy you!' She seemed to forget what she had said, the moment she had said it--she turned away, and opened a drawer, and took out a book closed by metal clasps. My presence in the room appeared to be a lost perception in her mind. The clasps of the book, as well as I could make it out, opened by touching some spring. I noticed that her hands trembled as they tried to find the spring. I attributed the trembling to the terrors of the night, and offered to help her. 'Let my secrets alone,' she said--and pushed the book under the pillow of her bed. It was my professional duty to a.s.sist her, if I could. Though I attached no sort of importance to what Jack had said, I thought it desirable, before I prescribed for her, to discover whether she had really taken some medicine of her own or not.

She staggered back from me, on my repeating what I had heard from Jack, as if I had terrified her. 'What remedy does he mean? I drank nothing but a gla.s.s of wine. Send for him directly--I must, and will speak to him!' I told her this was impossible; I could not permit his sleep to be disturbed. 'The watchman!' she cried; 'the drunken brute! send for him.'

By this time I began to conclude that there was really something wrong. I called in her daughter to look after her while I was away, and then left the room to consult with Fritz. The only hope of finding Schwartz (the night-watch at the Deadhouse being over by that time) was to apply to his sister the nurse. I knew where she lived; and Fritz most kindly offered to go to her. By the time Schwartz was found, and brought to the house, Madame Fontaine was just able to understand what he said, and no more. I began to recognize the symptoms of Mr. Keller's illness. The apathy which you remember was showing itself already. 'Leave me to die,' she said quietly; 'I deserve it.' The last effort of the distracted mind, rousing for a moment the sinking body, was made almost immediately afterwards.

She raised herself on the pillow, and seized my arm. 'Mind!' she said, 'Minna is to be married on the thirteenth!' Her eyes rested steadily on me, while she spoke. At the last word, she sank back, and relapsed into the condition in which you have just seen her."

"Can you do nothing for her?"

"Nothing. Our modern science is absolutely ignorant of the poisons which Professor Fontaine's fatal ingenuity revived. Slow poisoning by reiterated doses, in small quant.i.ties, we understand. But slow poisoning by one dose is so entirely beyond our experience, that medical men in general refuse to believe in it."

"Are you sure that she is poisoned?" I asked.

"After what Jack told me this morning when he woke, I have no doubt she is poisoned by 'Alexander's Wine.' She appears to have treacherously offered it to him as a remedy--and to have hesitated, at the last moment, to let him have it. As a remedy, Jack's ignorant faith gave it to her by the hands of Schwartz. When we have more time before us, you shall hear the details. In the meanwhile, I can only tell you that the retribution is complete. Madame Fontaine might even now be saved, if Jack had not given all that remained of the antidote to Mrs. Wagner.

"Is there any objection to my asking Jack for the particulars?"

"The strongest possible objection. It is of the utmost importance to discourage him from touching on the subject, in the future. He has already told Mrs. Wagner that he has saved her life; and, just before you came in, I found him comforting Minna. 'Your mamma has taken her own good medicine, Missy; she will soon get well.' I have been obliged--G.o.d forgive me!--to tell your aunt and Minna that he is misled by insane delusions, and that they are not to believe one word of what he has said to them."

"No doubt your motive justifies you," I said--not penetrating his motive at the moment.

"You will understand me directly," he answered. "I trust to your honor under any circ.u.mstances. Why have I taken you into my confidence, under _these_ circ.u.mstances? For a very serious reason, Mr. David. You are likely to be closely a.s.sociated, in the time to come, with your aunt and Minna--and I look to you to help the good work which I have begun. Mrs.

Wagner's future life must not be darkened by a horrible recollection.

That sweet girl must enjoy the happy years that are in store for her, unembittered by the knowledge of her mother's guilt. Do you understand, now, why I am compelled to speak unjustly of poor Jack?"

As a proof that I understood him, I promised the secrecy which he had every right to expect from me.

The entrance of the nurse closed our conference. She reported Madame Fontaine's malady to be already altering for the worse.

The doctor watched the case. At intervals, I too saw her again.

Although it happened long ago, I cannot prevail upon myself to dwell on the deliberate progress of the h.e.l.lish Borgia poison, in undermining the forces of life. The nervous shudderings reached their climax, and then declined as gradually as they had arisen. For hours afterwards, she lay in a state of complete prostration. Not a last word, not a last look, rewarded the devoted girl, watching faithfully at the bedside. No more of it--no more! Late in the afternoon of the next day, Doctor Dormann, gently, most gently, removed Minna from the room. Mr. Keller and I looked at each other in silence. We knew that Madame Fontaine was dead.

VIII

I had not forgotten the clasped book that she had tried vainly to open, in Doctor Dormann's presence. Taking it myself from under the pillow, I left Mr. Keller and the doctor to say if I should give it, unopened, to Minna.

"Certainly not!" said the doctor.

"Why not?"

"Because it will tell her what she must never know. I believe that book to be a Diary. Open it, and see."

I found the spring and opened the clasps. It _was_ a Diary.