1. Both focal and diffuse glomerulitis has been produced in rabbits by the injection directly into the left renal artery of suspensions of heat killed hemolytic streptococci.
2. Similar lesions in the glomeruli could not be obtained by the injection of suspensions of bismuth oxychloride into the left renal artery of normal rabbits.
3. The acute glomerulitis occurred in only about one-half of the rabbits employed for the experiments.
4. Glomerulitis was observed much more frequently in rabbits in which an acute localized streptococcus infection had been produced by the intracutaneous injection of living hemolytic streptococci, than in normal rabbits. The occurrence of acute glomerulitis was usually associated with a well marked skin reaction to the filtrates of hemolytic streptococci.