He advised me to use, as a wash to the irritated and irritable surface, a weak solution of corrosive sublimate. I hesitated; especially as I believed it to be, with him, an experiment. But on his repeated assurance, that if I would take special care of myself and avoid taking cold, there was no danger, I waived my objections, and proceeded to carry out his plan. The solution was applied, accordingly, to the letter of the doctor's directions. For many days no change appeared, either favorable or adverse. At length a most distressing headache came on and remained. My sufferings became so severe that I was obliged to postpone my school and return to my father's house. On the road, I observed that an eruption of a peculiar kind had appeared, particularly about the forehead, accompanied with small blisters. It was not here that I had applied the solution, but on the arms, chest, and lower limbs. Of course the corrosive sublimate, if at all operative, had affected me through the medium of the circulation and not by direct contact. Our physician came, pronounced the disease erysipelas, and without saying a word about the cause, prescribed; and I followed out carefully his prescription. But the disease had its course in spite of us both, and was very severe. It took away my sleep entirely for a day or two. It proved a means of removing the hair from one side of my head, and of so injuring the skin that it never grew again. Indeed, gangrene or mortification had actually commenced at several points. Suddenly, however, the pain and inflammation subsided, and I recovered. Now my physician never said that I was poisoned by the corrosive sublimate, probably for the two following reasons: 1, I never made the inquiry. 2, He would probably have ascribed the disease to taking cold rather than to the mercury, had I inquired. I do not believe I took cold, however. How it came to affect me so unfavorably I never knew with certainty; but that it was the medicine that did the mischief I never for one moment doubted. I suppose it was absorbed; but of the manner of its introduction to the system I am less certain than of the fact itself. But besides the absorption of the corrosive sublimate into the system, and its consequences--a terrible caution to those who are wont to apply salves, ointments, washes, etc., to the surface of the body unauthorized--I learned another highly important lesson from this circumstance. Active medicines, as I saw more plainly than ever before, are as a sword with two edges. If they do not cut in the right direction, they are almost sure to cut in the wrong.