I was night clerk in one of the best drug stores in the town of N–, says a writer in the "Christian Observer." One evening at 11 o'clock I began to make preparations to retire to my cot behind the rear partition of the store, locked the front door and lowered the lights. I was just falling into a pleasant sleep when the night bell rang. I arose, waited on the customer, re-fixed the door and light, and returned to my room.

Before half-an-hour had passed, the bell rang again. I answered it, waited on the messenger, and again lay down.

Perhaps it was an hour later, when once more I was aroused by the bell. I was enjoying sound sleep, and, by no means in a good humor, admitted the boy, who thrust a prescription at me saying, "Mother is very sick; please put up this medicine quick."

With sleepy eyes and ill-humor I prepared the medicine, dismissed the boy, locked the door, and was about to lower the gas-light, when I picked up the prescription to file it, and to my horror discovered that I had made a serious mistake. A deadly poison was in that medicine.

What should I do? Overcome with shame and self-accusation, I paced the floor. Had I known the boy, or where the family lived, I should have followed to prevent the use of the medicine; but I knew not whence he came. I threw myself on my knees; with tears I confessed my sin of petulance, ill-humor and neglect of watching or praying, pleaded with the Saviour not only to forgive my sin, but, somehow, to overrule my very mistake. I knew not how this could possibly be, but continued on my knees, scarcely knowing what I said; my prayer was more groaning in the spirit than anything else.

My prayer was interrupted by the violent ringing of the bell. I opened the door, and there was the boy. "Oh," he said, "I fell and broke the bottle; please put up the medicine again."

I almost fainted for joy. Before I put up the medicine again I slipped into my little chamber, threw myself on my knees and just simply said, with tears of gratitude streaming down my face, "Lord Jesus, I thank Thee." My prayer was heard and granted.