“A minute discussion of the subject would be occupied largely by the question of exactly what are the poisons which cause this condition, and this question has not yet been definitely answered. “So far as neutralizing the results of excessive action of the thyroid, it is best accomplished by rest, a diet from which meat and other heavy proteins are excluded, regulation in the action of the bowels and the avoidance of nervous excitement or undue exertion. If the action of the heart is excessively disturbed, those drugs which control cardiac action must be used. In extreme cases, morphine and atropine are given.” PYELITIS is a fairly common, and sometimes a very painful and serious complication arising during the latter half of pregnancy. It is an inflammation of the pelvis of the kidney, most frequently the right, caused by a damming back of urine, because of pressure of the enlarged uterus on the ureter where it crosses the pelvic brim; and by infection, which may travel up from the bladder or be conveyed by the lymph and blood streams, frequently from the intestines. The colon bacillus is the commonest offender, though the streptococcus, gonococcus or even the tubercle bacillus may be the cause. Frequently the patient will be entirely well, aside from a slight irritability of the bladder causing frequent micturition, and suddenly have paroxysms of acute pain in the region of the kidney, which may be swollen and very painful on palpation. She will have fever and sometimes chills and a catheterized specimen of urine will contain pus and bacteria. The kidney may suddenly empty itself of pus after which the pain and swelling will subside, only to recur when the pus accumulates again. The treatment is rest in bed, a bland diet and an abundance of milk and water to drink. As the infection is often of intestinal origin, drugs are usually given to prevent intestinal fermentation and keep the bowels moving freely. Sometimes, though rarely, when the patient does not improve under treatment, pregnancy is terminated to relieve the pressure on the ureter and thus drain the diseased kidney by permitting an unobstructed flow of urine. The tendency of the disease is to subside spontaneously, but sometimes it is necessary to incise and drain the kidney, or even to remove it; while in others the infection is so virulent that the patient dies of septicemia.