Excerpts from the Preface: This digest summarizes natural resource legislation applicable to agricultural, forestry, and related programs, enacted by the U. S. Congress from 1950 through 1966 (81st through 89th Congress). Although emphasis has been placed on this recent period in order that current trends may be discerned, some earlier legislation is also included to provide the researcher with basic applicable legislation. The digest is designed to serve as a quick reference guide to aid the researcher in locating legislation dealing with a particular subject and, by a brief synopsis of the statute, to indicate its content. The origin and development of the legislation can be traced by referring to the statutes cited at the end of each synopsis. The legislation in this digest is arranged by subject matter rather than chronologically. An exception is made in the Land-Use Adjustment section, where specific crop allotment legislation is presented chronologically to show trends in national policy. The digest was compiled from Committee Prints prepared by the House Committee on Agriculture (containing a review of legislation enacted during the preceding congressional session), the Digest of Agricultural Legislation prepared by the Office of Budget and Finance of the U. S. Department of Agriculture for each congressional session, and independent research.