A review of the book, The Nature of the Stratigraphical Record. The geologic record can be described as long periods of relative calm punctuated by brief catastrophic events. Numerous geologic features can be traced over large portions of the earth's surface. Published in Origins v. 2, n. 2.

This new concept indicates that some events in the past history of the earth may have proceeded much more rapidly than was previously believed. Published in Origins v. 2, n. 2.

Growth lines found in several invertebrates show promise of serving as a basis for many avenues of investigation. Their value as an independent method for geochronometry is presently questioned, while other methods of using them are being developed. Published in Origins v. 1, n. 2.