Bill, you still haven't explained the salt rising bread.

I thought I had you when I remembered a cookbook dating from 1891 in my library (the type that starts explaining how you make turtle soup by the words "catch a medium sized turtle, make sure you hang it by the hind feet before cutting off head so it will drain properly...)

Well there were a few recipes to make yeast involving salt (and potatoes) but no salt rising bread. Curioser and curioser.

Saltbox A saltbox is nearly chest-high in the back and mid-thigh in the front and it looks like the house Bill showed us. In rural areas you can find this on some street corners with a shovel inside so people can spread salt if they see the need. You rarely see them in urban areas anymore as all the salt spreading is very well timed.

I have never heard the name salt cellar. A celler is generally an underground storage area for food or wine. It may be under the house or only partly so. Often it will be called a 'cold room'.