Christopher Tidy on Wed, 12 Aug 2020
03:16:55 -0700 (PDT) typed in rec.crafts.metalworking the following:
Some species, yes. Cypress and pine.

Anyone know which species of lumber sank on the North American log drives? Looking at the black-and-white pictures, the bark looks like some kind of pine, but it's hard to be sure.

Depends on where the logging occurred. Lake Washington (Seattle)
is "full" of Fir trees. East of the Cascades it is pines. So what
sank was what was local.

Chris
--
pyotr filipivich
"With Age comes Wisdom. Although far too often, Age travels alone."