Tulsa, Okla., March 3rd, 1919. 611 South Boulder.

Mr. W. E. Wrather, Sec’y American Ass’n. Pet. Geologists, Dallas, Texas.

Dear Sir:-

In the Bulletin (1918) of the Association, which has just come to hand, I note paper by Dr. D. W. Ohern entitled “A Contribution to the Stratigraphy of the Red Beds.”

It may seem out of place to criticize a valuable scientific paper upon grounds other than technical, but it seems to the writer that all matters of history in such papers should be kept straight.

I refer to the statement as follows: “As late as 1912 it was...

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