*There have been published previously a series of studies on experimental cardiorenal disease by Drs. H. A. Christian, R. M. Smith, and I. C. Walker: Studies I. and II., Boston Med. and Surg. Jour., 1908, clviii, 696, and 1908, clix, 8; Study III., Jour. A.M.A., 1909, liii, 1792; and Studies IV., V., VI., VII., VIII., IX., X., XI., XII., XIII., XIV., and XV., Archives of Int. Med., 1911, viii, 468-551 and by Dr. H. A. Christian and James P. O'Hare: Studies XVI., XVII., and XVIII., in press.