Dear etaoin: I did a bit of pottery almost sixty years
ago. A lot of fun, so much to learn. I think changes since
l913 are not important to amateurs. I was interested to learn about a year ago that the New England red men did not know how to get high temps, and so all their pottery had very short life span, and only a few items to be found in museums. Reminds me of baloney I have read about red men
making maple syrup. They simply could not have had kettles
to do it. Undoubtedly they used the sweet sap though. Which reminds me of one more thing I learned here. Aphids which spray sticky stuff on cars parked below maple trees, waste most of the sap just to get the minerals.