Jerome, Wednesday April 8, 1925 Started away at 7.45 A.M., out on the Prescott road about 3 miles from a place known as Walnut Spring. This is an abandoned mine building. He climbed about 120 feet did one Archeoptere (Archaeopteryx) oolith. Then came the so called "Tapeats Sandstone" which is not Cambrian but the underlying base of the Upper Devonian. It is at first an arkose erylomite, rusty red in color, much cross bedded, with the pebbles on a rule between 1/4 and 1/2 inch, with some 1 inch long. All the pebbles are outsrounded or angular showing but little transportation. Feldspar pebbles are Com- mon. There is some thing like to foot of this. Then the sandstone becomes finer and gradually changes into laminated dense dark colored limestone that has diagenetic alteration in small cavities, filled with calcite. You may be so lucky this. These laminated beds fans into a series, first of almost white crudely fracturing li., then pinkish and dark dove colored very finely crystalline dol- omite that are interbedded with at least fragments of thick calcareous (or 3 or gypsum) shale. These go on about 330 feet, and some have recognizable trails although we does facial like markings that may be altered organisms.