Show MINIMUM TRADE RULES ON CURB NEW YORK April 28 Trading JP In the curb was reduced to minimum proportions Saturday and price changes were most tant Thin markets were noted In eral Industrial shares some ot of which rose under unde-r light buying orders Among them were Parker Rust Proof Sherwin Williams and Pittsburgh Plate Glass each of which gained more than a point on small transfers Mining stocks tended h higher her but their volume was inconsequential and New Jersey Zinc gained fractionally Mountain States Telephone ad ad- a point and a hat half on an early ten share transaction Issues of pow pow- er Cr and light hOlding companies stagnated stag stag- and the same was largely true of specialties and oils Pan American Airways Cord Corporation Cor Cor- oration p-oration American Cyanamid D B Standard Oil o Indiana Swift Co Hiram Walker Electric Elec Elec- Bond Share American Gas Lake Shore Mines and Pioneer Gold were virtually unchanged I |