[3820] start Alpine Saturday April 3 1926 Started out (7 sat girls) at 5.20 A.M. for Marathon (30 miles E.) and then to a place 3 miles south of Sap- tank which is 24.6 miles N.E. of Marathon. Arrived at 10.10 and began collecting in two yrs of the upturned Lower Saptank. The section as measured here by Blanchard and Baldwin for the Macland Cr. is as follows. Total thickness measured 608 feet but is considerable thicker Cemanchean Cretaceous at one. Saptank in an anticline. The section begins at the base. Great limestone formity Li. and ss. cmgl. with pieces li. and chat and some sand. Thickness variable 10'-300'. See April 6 for more detail This is not a fossil conglomerate. Hard gray shale 120' with a lense 3