Bowie Race Course opened a 64-day meeting yesterday without a chairman of the board or a track president listed on the program.

That did not stop 7,126 fans from betting on the first four races.

Shortly before post time for the fifth event, Marshall A. Jacobs, a New York attorney was introduced to the press as the new chairman and Joseph V. McLoone was named president.

"These moves mark an Americanization of the track ownership," a Bowie official declared.

Jacobs is the only American director of North Canadian Oil Ltd, the holding company that has its home offices in Calgary, Alberta, North Canadian owns 48 per cent of Hambro of Canada, which owns 58 per cent of Foodex of Canada, which owns 61 per cent of Gibraltan Pari-Mutual, Inc., which operates Bowie and Freehold Raceway, Freehold, N.J.

"I was requested to take over as chairman of Gibraltar," Jacobs said. "They said to me, "This is your baby'. Well, we intend to conduct a study which will show us how we can improve racing at Bowie."

Jacobs replaces Dr. Kenneth Rob erts of Toronto as board chairman.McLoone, who once served as general manager of Bowie before taking on similar duties at Freehold, succeeds Elaine Roberts as president.

Gene Casey of Gaithersburg has been elected chairman of the board of the Southern Maryland Agricultural Association, which runs Bowie under the Gibraltar banner.Al Karwacki continues as vice-president and general manager of Bowie and also assumes the duties of treasurer.

While all this was being announced the more than 7,000 fans on hand continued to bet on the nine-race card, contributing to a $873,794 mutuel handle.

much of their attention centered on the eight race, the $38,400 Southern Maryland Handicap won by John U To Berry, a 4-year-old son of Kentucky Derby winner Forward Pass.

John U to Berry paid $16 straight after completing the six furious of good track in 1:10 1/5. The boy colt trained by Dickie Dutrow scored by three lenghts, going away, under Vince Bracciale.

The Southern Maryland was roughly run affair. The victor closed outside while much of the field was getting in each other's way on the turn and in early stretch Bold Road, in particular, took up sharply because of from Derby, along the rail, thus losing all chance of winning although easily second best, at worst.

Bold Road finished fouth but was moved up to third place following a steward's inquiry and an objection lodged by Chris McCarron. Irony Derby, the third finisher, was disqualified and placed last.

Sporting Powder, the favorite, took second money, three lengths behind John U To Berry and one length ahead of Iron Derby a neck ahead of Bold Road at the wire.

John U The Berry and Sporting Power combined for a $122.80 return on the 7-6 exacta.