Thursday, Aug. 21, 1930, continued a long straight plane cutting all sorts of stuff presenting in joints about two feet thick. All is a grey to white lamin- ated arkosic sand (see sample) with some of the planes subsequently disturbed red by penetrating roots. A small litter of mud cracking. The whole appears to me to be a delta on the land side and other dry terraces lower the sands into low dunes that the river presents cut off and then present the sands right to repeat the process over and over again. After passing the disturbed area, the SS constantly shows Psilophyton, but at no place does one see leaves, and my free piece that I took along appears to show needles. If so it must be a club moss. In one of the dredged clyps, the Sarsness found an imbedded slab in the clay, 16" long and 4"-6" thick. It is the same the normal to be seen in the basely the "Bonarentine" at Beaumene. Yogan gives the thickness of the so-called "Bonarentine" as 2966', and of which he estimates 1/4 is clay = 690' (I have reduced it to 53.5'). Then he estimates over clay (?) down in 300' over to Pla- teau Island = 3066'. I have changed my field figures to agree with his making 3060' as on page m left.