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.sciences, bill ashman collection - correspondence, chemistry of today, john seaverns, more about hydroculture