"February 1942" Reprinted from the second proceedings of the Soil Science Society of Florida, Gainesville, May 1940. Includes bibliographical references. Electronic reproduction. [Florida] : State University System of Florida, PALMM Project, 2002. (Florida Agricultural History and Rural Life) Mode of access: World Wide Web. System requirements: Internet connectivity; Web browser software; Adobe Acrobat Reader to view and print PDF files. Electronically reproduced from collection in the George A. Smathers Libraries of the University of Florida.