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.

The Gingko Petrified Forest in western Washington state contains a large variety of petrified plant species, more than any other site known. The plants represent a mixture of tropical and temperate species that appear to have been transported and not grown in situ. Published in Origins v. 1, n. 2.

This is an update of "The Ginkgo Petrified Forest" Origins 1(2):101-103 (1974)

Trees were measured at nine locations in two general areas in Arizona and Utah. Preliminary data show very strong orientation of logs at most sites. Published in Origins v. 1, n. 1.