CHAPTER XX.
When, late that night, I entered my bedroom again, how I blessed the lucky accident of my six hours' sleep, after a night's watching at Mr.
Keller's bedside! If I had spoken to Doctor Dormann as I had positively resolved to speak, he would, beyond all doubt, have forbidden the employment of Madame Fontaine's remedy; Mr.Keller would have died; and the innocent woman who had saved his life would have been suspected, perhaps even tried, on a charge of murdering him.

I really trembled when I looked back on the terrible consequences which must have followed, if I had succeeded that morning in keeping myself awake.
The next day, the doses of the wonderful medicine were renewed at the regular intervals; and the prescribed vegetable diet was carefully administered.

On the day after, the patient was so far advanced on the way to recovery, that the stopper of the dark-blue bottle was permanently secured again under its leather guard.

Mr.Engelman told me that nearly two doses of it were still left at the bottom.

He also mentioned, on my asking to look at it again, that the widow had relieved him of the care of the bottle, and had carefully locked it up in her own room.
Late on this day also, the patient being well-enough to leave his bed and to occupy the armchair in his room, the inevitable disclosure took place; and Madame Fontaine stood revealed in the character of the Good Samaritan who had saved Mr.Keller's life.
By Doctor Dormann's advice, those persons only were permitted to enter the bedroom whose presence was absolutely necessary.