Better things for better living through chemistry. A view of the exhibition in the New York Museum of Science and Industry of principal contributions of the duPont Co. laboratories revealing the various products which are manufactured from such raw materials as coal, salt, vegetable oils, cotton and wood. This is one in a series of constantly changing exhibitions, which, together with the 2000 other permanent displays earns for the museum the reputation of being the new spot of high interest in Rockefeller Center. Open 10 am to 10 pm. Every day.