Physical description

Five page copy of a broadcast titled 'More About Hydroculture' dated 17 September, 1937. Heading - Chemistry of Today. Mentioned is the growth of plants, carbon - diamond and graphite, animal life and some plants that a Mr. Franklin D. Underwood of Harwich, Mass. Had grown using the growing salts. Typed on paper with printed letterhead and has Broadcast (3) written at the top of the page.