[jtuple]

Is "Measure of the Universe" the book you're thinking of?

Alternatively, chapter 8 of "Realm of Numbers" touches on logarithms, and "That's about the size of it" chapter from Assimov on Numbers" includes a log-scale table of animal weights (from blue whale at 8.08 to Rotifer at -8.22)

[slowhadoken]

Could be, I’ll check it out. It’s probably on of those childhood memories lost in time. Thanks though.