In reproducing the authors’ “Table I”1 a slight omission was made. If uncorrected, this omission may make the table slightly misleading.

On the left-hand margin of Table I, a short horizontal line should be drawn below the marginal word “Monterey” and opposite the dotted line of the first column which separates the “Valvulineria californica zone” and the “’Monterey shale’ between V. californica zone and ’Button bed’ sand.” With the table corrected in this manner, there is no implication that the 250 feet of beds above the Button bed, in the Chico-Martinez Creek area, are equivalent to any portion...

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