A STUDY OF THE MECHANICAL OBSTRUCTION TO THE CIRCULATION OF THE KIDNEY PRODUCED BY EXPERIMENTAL ACUTE TOXIC NEPHROPATHY.

1. Rabbits may have spontaneous nephropathy and show no casts or albumen in the urine. 2. If we leave out of consideration rabbits 17, 18, 19, and 20, which were perfused with Adler's solution, and rabbits 8, 9, 17, 18, and 28, which were injected subcutaneously with potassium chromate, rabbits 49 and 73 show that spontaneous nephropathy offers some impediment to the perfusing serum.