Harry W. Titus, 82, a former biochemist with the Department of Agriculture, died Tuesday of a pulmonary embolism in a Dover, N.J., hospital.

Dr. Titus joined the Agriculture Department in 1926 as an associate biochemist in the Bureau of Animal Industry. He was senior biochemist in charge of poultry nutrition investigations for about 10 years before becomming head of the feed specialties division of the War Food Administration in 1943.

He moved to New Jersey in 1944 and spent 20 years as research director and technical counselor for the Limestone Production Corporation in Newton before retiring in 1964.

Dr. Titus was a native of Laramie, Wyo. He earned bachelor's and master's degrees at the University of Wyoming and a doctorate in biochemistry from George Washington University.

Before coming to Washington in 1926, he taught at a number of eastern colleges and spent a year as a chemist and as a fellow of the AmericanScandinavian Foundation at the Stockbolm Hogskola and Nobel Institute.

His professional memberships included the Dairy Science Association, the Poultry Science Association, the Institute of Nutrition, and the American Academy for the Advancement of Science.

Survivors include a son, Dr. Harry Titus, of New Concord, Ohio; a sister, Mrs. Homer Lisenby, of Fruitland, Idaho, and two grandchildren.