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Progress during 1957 on the coal-burning gas-turbine power plant being perfected by the Locomotive Development Committee of Bituminous Coal Research, Inc., is reported. Operating experience with the Union Pacific Railroad’s 4500-hp General Electric gas-turbine-electric units, and the characteristics of the 8500-hp units on order from General Electric are given. The U. S. Army’s 30-ton unit, Electro-Motive Division’s free-piston engine, several British Railways developments, Soviet designs, Swiss, Czechoslovakian, Swedish, and French progress are reported.

Gallbladder and bile duct disease has long been recognized as a cause for pancreatitis. Judd1 says, "Cholecystitis is nearly always associated with a certain grade of hepatitis or pancreatitis, or both," and Deaver and Sweet2 say, "The most frequent forerunner of disease of the pancreas is some affection of the gallbladder or the bile passages which is frequently but not always associated with calculi." Mayo-Robson believes that there is evidence of chronic pancreatitis in 60 per cent of patients in whom operation has shown the presence of stone in the common bile duct. This being a common observation of surgeons, the association of chcolecystitis and diabetes mellitus has been sought. From a statistical standpoint, there are those who could find no relationship between the incidence of biliary tract diseases and diabetes, 3 while others are convinced that there is such a relationship.4It seemed, therefore, worth while