A program of scientific motion pictures, open to the public without charge, will be held tonight at the Institute of Geographical Exploration, at 8 o'clock. The program is sponsored by the Boston and Cambridge branch of the American Association of Scientific Workers.

Assistant professor Abraham Krasker, head of the Boston University Film Service, will open the program with a short talk on scientific films.

Among the movies to be shown are: "Inside the Flame," showing the production and uses of carbon black; "Embryology of the Chick," made under the supervision of Julian Huxley.