Classes of soil Small 320×78 Medium 640×155 Large 1024×248 Download Tiff Original 2400×582 | (242.0 KB) Description "Diagram showing the genetic relations of the different soil classes."—Finley, 1917 Keywords alluvial, bench, colluvial, lowland, plateau, sedentary, upland Galleries Geology Source: Finley, John H. Nelson's Perpetual Loose-Leaf Encyclopedia (New York City: Thomas Nelson and Sons, 1917) 11:293