"There's no real way to make glass, either. I imagine anything we'd find from the lightning strikes would be in too small an amount to do anything with, not to mention we'd have to blow it out and smooth it into flat panes."

Helen shook her head, trying to clear the cobwebs from it. They could brainstorm this, she thought, but it would take a bit of doing.

"I suppose we could ask one of our medieval brethren how they came about glass. I know many buildings didn't have it at all in those days but some did. Surely they had a process that might be more feasible here."