Well, this is just so dadburned interesting, I can't wait for the next chapter, "Old Blood 'n' Guts"!

We've got Helen in one corner telling us that her grandma boiled urine to make ammonia, and there's Bill in the other telling us that Egyptian priests (or something) were down in manure pits making the same.

OK, so, iff'n you want ammonia, you can use urine or manure, right? Helen's grandma's way seems easier than going down into a manure pit.

Bottom regards,
WordWoozey