Mayhue 1964 Journal 8. Sept. 2 Glamis area, Imperial Co., Calif. a portion of the afternoon digging into the dunes at several locations to check on the depth of the permanently moist layer in these dunes. I have soil sample data for a couple of years, but it was always measured at the same location. Today I dug in several locations. There was some variation from one location to another, but at all sites the depth varied from 12 inches (30 cm) to 20 inches (50 cm). The last rain that occurred here was on Feb. 29th (0.03"), so this moisture obviously is not just the remnant of that rain. The total rainfall recorded in my Glamis rain gauge in 1964 has been 0.46 inches. The total rainfall during the past year that has been measured in that gauge is 1.49 inches. Consequently, the very moist sand that I found in several places (every place I dug) must be at the level of the permanently wet layer. As this layer has been detected previously in the Sahara Desert, Arabian Desert & Egyptian Desert, its occurrence here is not unusual. The sand between 30 and 50 cm. was quite moist to the touch, and was visibly damp. It appeared as