which I shall carefully look after) she is likely to remain.
   "I have made a memorandum of the date at which her promissory note falls
   due--viz., the 31st December in the present year. The note being made
   payable at Wurzburg, you must take care (in the event of its not being
   honored) to have the document protested in that town, and to communicate
   with me by the same day's post. I will myself see that the law takes its
   regular course.
   "Permit me most gratefully to thank you for the advance on my regular
   fees which you have so graciously transmitted, and believe me your
   obedient humble servant to command."
   II
   I next submit a copy of a letter addressed by the late
   Chemistry-Professor Fontaine to an honored friend and colleague. This
   gentleman is still living; and he makes it a condition of supplying the
   copy that his name shall not appear:--
   "Illustrious Friend and Colleague,--You will be surprised at so soon
   hearing from me again. The truth is, that I have some interesting news
   for you. An alarming accident has enabled me to test the value of one of
   my preparations on a living human subject--that subject being a man.
   "My last letter informed you that I had resolved on making no further use
   of the Formula for recomposing some of the Borgia Poisons (erroneously
   supposed to be destroyed) left to me on the death of my lamented
   Hungarian friend--my master in chemical science.
   "The motives which have led me to this decision are, I hope, beyond the
   reach of blame.
   "You will remember agreeing with me, that the two specimens of these
   resuscitated poisons which I have succeeded in producing are
   capable--like the poisons already known to modern medical practice--of
   rendering the utmost benefit in certain cases of disease, if they are
   administered in carefully regulated doses. Should I live to devote them
   to this good purpose, there will still be the danger (common to all
   poisonous preparations employed in medicine) of their doing fatal
   mischief, when misused by ignorance or crime.
   "Bearing this in mind, I conceive it to be my duty to provide against
   dangerous results, by devoting myself to the discovery of efficient
   antidotes, before I adapt the preparations themselves to the capacities
   of the healing art. I have had some previous experience in this branch of
   what I call preservative chemistry, and I have already in some degree
   succeeded in attaining my object.
   "The Formula in cipher which I now send to you, on the slip of paper
   enclosed, is an antidote to that one of the two poisons known to you and
   to me by the fanciful name which you suggested for it--'Alexander's
   Wine.'
   "With regard to the second of the poisons, which (if you remember) I have
   entitled--in anticipation of its employment as medicine--'The
   Looking-Glass Drops,' I regret to say that I have not yet succeeded in
   discovering the antidote in this case.
   "Having now sufficiently explained my present position, I may tell you of
   the extraordinary accident to which I have alluded at the beginning of my
   letter.
   "About a fortnight since, I was sent for, just as I had finished my
   lecture to the students, to see one of my servants. He had been suffering
   from illness for one or two days. I had of course offered him my medical
   services. He refused, however, to trouble me; sending word that he only
   wanted rest. Fortunately one of my assistants happened to see him, and at
   once felt the necessity of calling in my help.
   "The man was a poor half-witted friendless creature, whom I had employed
   out of pure pity to keep my laboratory clean, and to wash and dry my
   bottles. He had sense enough to perform such small services as these, and
   no more. Judge of my horror when I went to his bedside, and instantly
   recognized the symptoms of poisoning by "Alexander's Wine!"
   "I ran back to my laboratory, and unlocked the medicine-chest which held
   the antidote. In the next compartment, the poison itself was always
   placed. Looking into the compartment now, I found it empty.
   "I at once instituted a search, and discovered the bottle left out on a
   shelf. For the first time in my life, I had been guilty of inexcusable
   carelessness. I had not looked round me to see that I had left everything
   safe before quitting the room. The poor imbecile wretch had been
   attracted by the color of "Alexander's Wine," and had tasted it (in his
   own phrase) "to see if it was nice." My inquiries informed me that this
   had happened at least thirty--six hours since! I had but one hope of
   saving him--derived from experiments on animals, which had shown me the
   very gradual progress of the deadly action of the poison.
   "What I felt when I returned to the suffering man, I shall not attempt to
   describe. You will understand how completely I was overwhelmed, when I
   tell you that I meanly concealed my own disgraceful thoughtlessness from
   my brethren in the University. I was afraid that my experiments might be
   prohibited as dangerous, and my want of common prudence be made the
   subject of public reprimand by the authorities. The medical professors
   were permitted by me to conclude that it was a case of illness entirely
   new in their experience.
   "In administering the antidote, I had no previous experiments to guide
   me, except my experiments with rabbits and dogs. Whether I miscalculated
   or whether I was deluded by my anxiety to save the man's life, I cannot
   say. This at least is certain, I gave the doses too copiously and at too
   short intervals.
   "The patient recovered--but it was after sustaining some incomprehensibly
   deteriorating change in the blood, which destroyed his complexion, and
   turned his hair gray. I have since modified the doses; and in dread of
   losing the memorandum, I have attached a piece of notched paper to the
   bottle, so as to render any future error of judgment impossible. At the
   same time, I have facilitated the future administration of the antidote
   by adding a label to the bottle, stating the exact quantity of the poison
   taken by my servant, as calculated by myself.
   "I ought, by the way, to have mentioned in the cipher that experience has
   shown me the necessity, if the antidote is to be preserved for any length
   of time, of protecting it in blue glass from the influence of light.
   "Let me also tell you that I found a vegetable diet of use in perfecting
   the effect of the treatment. That mean dread of discovery, which I have
   already acknowledged, induced me to avail myself of my wife's help in
   nursing the man. When he began to talk of what had happened to him, I
   could trust Madame Fontaine to keep the secret. When he was well enough
   to get up, the poor harmless creature disappeared. He was probably
   terrified at the prospect of entering the laboratory again. In any case,
   I have never seen him or heard of him since.
   "If you have had patience to read as far as this, you will understand
   that I am not sure enough yet of my own discoveries to risk communicating
   them to any other person than yourself. Favor me with any chemical
   sugge 
					     					 			stions which may strike you--and then, in case of accidents, destroy
   the cipher. For the present farewell."
   _Note to Doctor Fontaine's Letter_
   "Alexander's Wine" refers to the infamous Roderic Borgia, historically
   celebrated as Pope Alexander the Sixth. He was accidentally, and most
   deservedly, killed by drinking one of the Borgia poisons, in a bowl of
   wine which he had prepared for another person.
   The formula for "The Looking-Glass Drops" is supposed to have been found
   hidden on removing the wooden lining at the back of a looking-glass,
   which had been used by Lucrezia Borgia. Hence the name.
   III
   The third and last letter which I present is written by me, and was
   addressed to Mrs. Wagner during her stay at Frankfort:--
   "I exaggerate nothing, my dear aunt, when I say that I write in great
   distress. Let me beg you to prepare yourself for very sad news.
   "It was late yesterday evening before I arrived at Bingen. A servant was
   waiting to take my portmanteau, when I got out of the coach. After first
   asking my name, he communicated to me the melancholy tidings of dear Mr.
   Engelman's death. He had sunk under a fit of apoplexy, at an early hour
   that morning.
   "Medical help was close at hand, and was (so far as I can hear) carefully
   and intelligently exercised. But he never rallied in the least. The fit
   appears to have killed him, as a bullet might have killed him.
   "He had been very dull and heavy on the previous day. In the few words
   that he spoke before retiring to rest, my name was on his lips. He said,
   "If I get better I should like to have David here, and to go on with him
   to our house of business in London." He was very much flushed, and
   complained of feeling giddy; but he would not allow the doctor to be sent
   for. His brother assisted him to ascend the stairs to his room, and asked
   him some questions about his affairs. He replied impatiently, 'Keller
   knows all about it--leave it to Keller.'
   "When I think of the good old man's benevolent and happy life, and when I
   remember that it was accidentally through me that he first met Madame
   Fontaine, I feel a bitterness of spirit which makes my sense of the loss
   of him more painful than I can describe. I call to mind a hundred little
   instances of his kindness to me--and (don't be offended) I wish you had
   sent some other person than myself to represent you at Frankfort.
   "He is to be buried here, in two days' time. I hope you will not consider
   me negligent of your interest in accepting his brother's invitation to
   follow him to the grave. I think it will put me in a better frame of
   mind, if I can pay the last tribute of affection and respect to my old
   friend. When all is over, I will continue the journey to London, without
   stopping on the road night or day.
   "Write to me at London, dear aunt; and give my love to Minna and
   Fritz--and ask them to write to me also. I beg my best respects to Mr.
   Keller. Please assure him of my true sympathy; I know, poor man, how
   deeply he will be grieved."
   PART II
   MR. DAVID GLENNEY COLLECTS HIS MATERIALS AND CONTINUES THE STORY
   HISTORICALLY
   CHAPTER I
   In the preceding portion of this narrative I spoke as an eye-witness. In
   the present part of it, my absence from Frankfort leaves me dependent on
   the documentary evidence of other persons. This evidence consists (first)
   of letters addressed to myself; (secondly) of statements personally made
   to me; (thirdly) of extracts from a diary discovered after the lifetime
   of the writer. In all three cases the materials thus placed at my
   disposal bear proof of truthfulness on the face of them.
   Early in the month of December, Mr. Keller sent a message to Madame
   Fontaine, requesting to see her on a matter of importance to both of
   them.
   "I hope you feel better to-day, madam," he said, rising to receive the
   widow when she entered the room.
   "You are very good, sir," she answered, in tones barely audible--with her
   eyes on the ground. "I can't say that I feel much better."
   "I have news for you, which ought to act as the best of all
   restoratives," Mr. Keller proceeded. "At last I have heard from my sister
   on the subject of the marriage."
   He stopped, and, suddenly stepping forward, caught the widow by the arm.
   At his last words she had started to her feet. Her face suddenly turned
   from pale to red--and then changed again to a ghastly whiteness. She
   would have fallen if Mr. Keller had not held her up. He placed her at
   once in his own easy chair. "You must really have medical advice," he
   said gravely; "your nerves are seriously out of order. Can I get you
   anything?"
   "A glass of water, sir, if you will be so kind as to ring for it."
   "There is no need to ring for it; I have water in the next room."
   She laid her hand on his arm, and stopped him as he was about to leave
   her.
   "One word first, sir. You will forgive a woman's curiosity on such an
   interesting subject as the marriage of her child. Does your sister
   propose a day for the wedding?"
   "My sister suggests," Mr. Keller answered, "the thirtieth of this month."
   He left her and opened the door of the next room.
   As he disappeared, she rapidly followed out a series of calculations on
   her fingers. Her eyes brightened, her energies rallied. "No matter what
   happens so long as my girl is married first," she whispered to herself.
   "The wedding on the thirtieth, and the money due on the thirty-first.
   Saved by a day! Saved by a day!"
   Mr. Keller returned with a glass of water. He started as he looked at
   her.
   "You seem to have recovered already--you look quite a different woman!"
   he exclaimed.
   She drank the water nevertheless. "My unlucky nerves play me strange
   tricks, sir," she answered, as she set the empty glass down on a table at
   her side.
   Mr. Keller took a chair and referred to his letter from Munich.
   "My sister hopes to be with us some days before the end of the year," he
   resumed. "But in her uncertain state of health, she suggests the
   thirtieth so as to leave a margin in case of unexpected delays. I presume
   this will afford plenty of time (I speak ignorantly of such things) for
   providing the bride's outfit?"
   Madame Fontaine smiled sadly. "Far more time than we want, sir. My poor
   little purse will leave my girl to rely on her natural attractions--with
   small help from the jeweler and the milliner, on her wedding day."
   Mr. Keller referred to his letter again, and looked up from it with a
   grim smile.
   "My sister will in one respect at least anticipate the assistance of the
   jeweler," he said. "She proposes to bring with her, as a present to the
   bride, an heirloom on the female side of our family. It is a pearl
   necklace (of very great value, I am told) presented to my mother by the
   Empress Maria Theresa--in recognition of services rendered to that
   illustrious person early in life. As an expression of my sister's
   interest in the marriage, I thought an announcement of the proposed gift
 &nbs 
					     					 			p; might prove gratifying to you."
   Madame Fontaine clasped her hands, with a fervor of feeling which was in
   this case, at least, perfectly sincere. A pearl necklace, the gift of an
   Empress, would represent in money value a little fortune in itself. "I
   can find no words to express my sense of gratitude," she said; "my
   daughter must speak for herself and for me."
   "And your daughter must hear the good news as soon as possible," Mr.
   Keller added kindly. "I won't detain you. I know you must be anxious to
   see Minna. One word before you go. You will, of course, invite any
   relatives and friends whom you would like to see at the wedding."
   Madame Fontaine lifted her sleepy eyes by slow gradations to the ceiling,
   and devoutly resigned herself to mention her family circumstances.
   "My parents cast me off, sir, when I married," she said; "my other
   relatives here and in Brussels refused to assist me when I stood in need
   of help. As for friends--you, dear Mr. Keller, are our only friend. Thank
   you again and again."
   She lowered her eyes softly to the floor, and glided out of the room. The
   back view of her figure was its best view. Even Mr.
   Keller--constitutionally inaccessible to exhibitions of female
   grace--followed her with his eyes, and perceived that his housekeeper was
   beautifully made.
   On the stairs she met with the housemaid.
   "Where is Miss Minna?" she asked impatiently. "In her room?"
   "In your room, madam. I saw Miss Minna go in as I passed the door."
   Madame Fontaine hurried up the next flight of stairs, and ran along the
   corridor as lightly as a young girl. The door of her room was ajar; she
   saw her daughter through the opening sitting on the sofa, with some work
   lying idle on her lap. Minna started up when her mother appeared.
   "Am I in the way, mamma? I am so stupid, I can't get on with this
   embroidery----"
   Madame Fontaine tossed the embroidery to the other end of the room, threw
   her arms round Minna, and lifted her joyously from the floor as if she
   had been a little child.
   "The day is fixed, my angel!" she cried; "You are to be married on the
   thirtieth!"
   She shifted one hand to her daughter's head, and clasped it with a fierce
   fondness to her bosom. "Oh, my darling, you had lovely hair even when you
   were a baby! We won't have it dressed at your wedding. It shall flow down
   naturally in all its beauty--and no hand shall brush it but mine." She
   pressed her lips on Minna's head, and devoured it with kisses; then,
   driven by some irresistible impulse, pushed the girl away from her, and
   threw herself on the sofa with a cry of pain.
   "Why did you start up, as if you were afraid of me, when I came in?" she
   said wildly. "Why did you ask if you were in the way? Oh, Minna! Minna!
   can't you forget the day when I locked you out of my room? My child! I
   was beside myself--I was mad with my troubles. Do you think I would
   behave harshly to you? Oh, my own love! when I came to tell you of your
   marriage, why did you ask me if you were in the way? My God! am I never
   to know a moment's pleasure again without something to embitter it?
   People say you take after your father, Minna. Are you as cold-blooded as
   he was? There! there! I don't mean it; I am a little hysterical, I
   think--don't notice me. Come and be a child again. Sit on my knee, and
   let us talk of your marriage."
   Minna put her arm round her mother's neck a little nervously. "Dear,
   sweet mamma, how can you think me so hard-hearted and so ungrateful? I
   can't tell you how I love you! Let this tell you."
   With a tender and charming grace, she kissed her mother--then drew back a
   little and looked at Madame Fontaine. The subsiding conflict of emotions