These affections tormented me more or less, until in the year 1833 I visited Hahnemann at Coethen, for the purpose of studying homoeopathia with him. Hahnemann treated me for three weeks, and I continued the treatment at my native place. My health improved steadily, and at the end of a year I considered myself cured. This lasted until October, 1836, when I was attacked with violent colic in one night. The pain was felt in the region of the left kidney, lancinating, pinching, sore; retching ensued, resulting in vomiting of mucus, and lastly bile. I took a few pellets of _Nux v._ x; after this the pain disappeared gradually, and the vomiting ceased. Next day I was well again. Two days afterwards I discovered gravel in the urine, and my sufferings had vanished. One year elapsed in this way; however, I occasionally experienced an uncomfortable sensation in the region of the left kidney, especially when riding on horseback, driving in a carriage, or walking fast; I took at times _Lycopod._, at times _Nux v._, in proportion as one or the other of these two remedies appeared indicated. In November, 1837, I was suddenly attacked with vomiting, accompanied with violent lancinating, sore or pinching pains in the region of the left kidney. The horrible anguish and pain which I experienced extorted from me involuntary screams; I was writhing like a worm in the dust. A calculus had descended into the ureter and had become incarcerated in it. Repeated doses of _Nux_ relieved the incarceration, and I distinctly felt that the calculus was descending towards the bladder. After twenty-four hours of horrible suffering the vomiting ceased, the pain became duller and was felt in the region where the ureter dips into and becomes interwoven with the tissue of the bladder: it continued for three days and then disappeared all of a sudden (the stone had not got into the bladder). Thirty-six hours afterwards the calculus entered the bulb of the urethra. I felt a frequent desire to urinate; the urine was turbid and bloody, until at last a calculus of four grains made its appearance in the urine. After this I frequently passed gravel and calculi, at times with slight, at times violent pains, sometimes accompanied with vomiting; I kept the larger calculi, with a view of using them hereafter as a curative agent. Professor Nasse, of Bonn, where my son studied medicine at the time, has analyzed the calculi, and has found them to be urate of lime. He advised me to take _Merc. dulcis_ and the _Sulphate of Soda_ for some time; it is scarcely necessary for me to say that I did not follow his advice.