Henry White Marston, 81, a retired official of the Agricultural Research Administration of the Department of Agriculture, died Tuesday at Montgomery General Hospital. He had a heart ailment.

Mr. Marston was born in Wilmington, Del. He earned a degree in agricultural science from the University of Delaware in 1919, and a master's degree in the same subject from Kansas State University in 1921. He then taught at Kansas State until 1927. He specialized in animial husbandry.

He moved to Washington that year and joined the Department of Agriculture. He was the research coordinator of the office of experiment stations.

In the 1950s, he was the executive secretary of committees dealing with dairy products, animal sciences, sheep and wool, and poultry.

In 1958, Mr. Marston transferred to the foreign research and technical programs division of the Agricultural Research Administration. He was assistant director at his retirement in 1966.

Mr. Marston was a past member of the American Society of Animal Production. He served in the Army in World War 1 amd was a member of the American Legion. He also belonged to Kiwanis International.

Survivors include his wife, Helen, of the home at Rossmoor Leisure World in Silver Spring; two daughters, Margery Clark, of Kensington, and Alice Taylor, of Larchmont, N.Y.; a sister Alice Marston, also of Rossmoor, and three grandchildren. CAPTION: Picture, HENRY W. MARSTON 1964 Photo