Journal Hefner, M.S. 1975 9 mi. E of Boron, San Bernardino Co. 2500 ft. California 18 January [cont] photo facing north through this plane west perimeter of mound MSH φ [37 gm] D. merianum lateral chambers Arriple (dead) 30 600 Arriple (dead) 350 50 small chamber 100 150 - Mound approx 200 mm. in height - Numbers represent depth from top of mound - no seed caches found in burrow - Numerous shallow diggings surround mound (seed surface caches?) - Soil hardens considerably below 200 mm. (400 mm below mound top) 300 mm.