“…(5) Avertin has little appreciable effect on the chief organs of excretion, i.e., the liver and kidneys. Too much unwarranted prejudice still exists against avertin on this score, but with the increasing experience that has been gained since the introduction of the drug to England in 1929, the greater is the tendency of authoritative opinion, based upon both clinical5' 6, and experimental7' 8,9 evidence, to regard the toxic effects on the excretory organs as negligible.…”