National Geographic : 1937 Aug
Photograph byJ.W. McManigal CONTOUR PLOWING ON THE HENDERSON FARM NEAR HORTON, TO SAVE TOPSOIL FROM EROSION DURING HEAVY RAINS In this terraced field, pictured from an elevation of about 1,200 feet, rain water, instead of rushing downhill andwashing gullies, isheld back so that much ofit soaks into the ground. Riding through east and central Kansas, one sees many such contour plowings, as well as numerous ponds formed by damming small ditches all to hold rainfall. Patches of woods are a frequent landscape feature in east Kansas.