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Extraction of vanadium(V) from acidic sulfate solutions by a mixture of tri-n-octylamine and tributylphosphate (used as modifier) dissolved in kerosene has been studied. The distribution coefficient of vanadium(V) increases with an increase in pH and vanadium(V) concentration. The presence of iron(III) in aqueous solution does not have any appreciable effect, while large amounts of sulfate ion depress the distribution coefficient. Uranium(VI) has a distribution different from vanadium(V). Based upon these results, a scheme for the separation of vanadium(V) from uranium leach liquors has been made and checked experimentally.

1. A case of dysphagia caused by a large cervical osteophyte is presented.2. The literature from 1960 is reviewed, with special reference to the cases in which operation was done, and etiological factors are considered.3. Excision of the osteophyte should in most cases be combined with fusion.

Twenty-one female rabbits underwent laparotomy and a standardized injury was produced on the right uterine horn and Fallopian tube. Following the injury eight animals were used as controls and thirteen were injected intraperitoneally with 50 ml. of 32 per cent dextran 70. Six weeks later the animals were killed and the adhesions graded. All control animals had dense adhesions of the injured areas to bowel or peritoneum. The dextran animals showed marked reduction in the extent and degree of adhesions. Possible mechanisms for these findings are discussed and the problems raised, by adhesion formation, to the gynecologist are reviewed.