Sunday, Feb 21 1936 After dinner walked west about 2 miles to Barton Springs. The springs (rather large) come out of the fault plane with the Georgetown to the S. and the Austin shale to the N. Collected in the tip of the Beag town and saw the regulation thrips. Took away but little. See the small lot. Above the Georgetown along the road we sees the Del Rio blue clay and above of the true Buda li. In the clay just beneath the Buda got me coral. Out of the Austin trick some round thing that may be oyster; they are from a rippled layer (oscillation ripples). The Buda has stlrie-like layers and these have irregular flat clay inclusions that are due to storm scars.