GRASS AND FARM CHEMURGY

Film on the use of farm products in industry and the growing of crops that we now import such as the vetches, soybeans, tomato beans, flax, milk and a number of other products of which we normally have a surplus. "The chemist similarities between the coal and oil groups and the grains is clearly explained. Then it is shown how, because of these chemical bases, grasses and coal or oil may be transformed into substitute materials. Clothing materials are analyzed, so that rayon and other synthetic products are explained. Excellent for all biology, general science, and beginning chemistry groups." Collaborator.