Saturday Feb 20-1926 Spent with Dellards this late afternoon collecting in the Walnut clays at Brad metal quarry four miles N.W of Austin Texas, just S.E. of Dry Creek on road to Bull Creek. This quarry is also a good sand from the front on the free line of the faults of the Balcones system. Probably one half of the clays is composed of immature Bryozoeas, Exogyra texana (fine) and casts of gastropods. Of irregular echinids we got 2+ that were restricted to a small quarry. One out from five thin. The ammonites Orthorhodus was very rare. The whole thickness here of the Walnut exposed is about 10 feet. If we had had two hours more here we could have gotten again as many more good forms. So far this locality had the greatest abundance of forms and in particular abundance. Outside of the opsters none of the molluscan preserve the shells. The Bryozoea system fault was below, about 10 feet thick, than the echinid layer above followed by a zone of about 2 feet with the layered and fork Exogyra texana.