Hi Dave,

Your up there, and funny, terminology seem to have escaped the urinary exchange, as you say. For the record, Challis wool is a particular yarn, date of invention unknown, Challis flannel is a specialty weave, c. 16th century England. Anyway, the 19th century definition was interesting.

Happy Trails!
Tom Martin
www.Piedmontflag.com
www.Confederate-flags.org