Case 1. A. U., male, aged 65 years, weight 175 pounds, first came under observation in July, 1924. History revealed frequency of urination over period of a year. About six months previous to examination he passed a small calculus, and in consequence visited a chiropractor for treatment. This individual made a diagnosis of cancer, and for three months treated the man by rubbing. By this time the suffering from frequency and urgency of urination had become so acute that the patient placed himself under the care of a physician. In the course of a thorough examination the position of the stones in the urinary bladder evidently shifted (prostatic manipulation), and caused distress in the pelvis. Before X-ray examination was made the patient passed eight small stones, each a perfect pyramid. X-ray examination made July 24, 1924 (Fig. 1), showed stones grouped in the urinary bladder in an almost spherical mass measuring 65 mm. by 60 mm. Physical examination negative, except as concerned the urinary tract. Pus in...