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The cover: The inset foreground photograph is a serpentinite rock covered with intensely iron oxide pigmented clays. The clays have translocated into the rocks along shear planes. The broken edge at the upper end of the rock displays the rocks' interior color which is considerably different than the clay and iron oxide produced from these rocks. The background picture is of a serpentinite rock from the surface of serpentinite soil displaying warty surface texture due to differential weathering of the minerals that make up the rock. The rock is bisected diagonally by a chrysotile vein. Please see pages 2087–2095, “Plant-Available Calcium Varies Widely in Soils on Serpentinite Landscapes” by Donald G. McGahan, Randal J. Southard, and Victor P. Claassen