[Doctor Stochastic]

I just read a nice biography of Steensen. He not only showed that tongue stones were actually shark teeth, he proposed the Law of Superposition for geologic layers. He also suggested that the Earth was millions of years old, perhaps billions. He was one of the first to use scientific principles in making such estimates.

Amazon review (sounds like an Busby Berkeley musical.)

[betty boop]

Oh, thank you so much Doc for the additional details on Steensen. He seems a most remarkable man!

Thanks so very much for writing, Doc -- good night, and sleep well!