Okay, thanks so much! I'll be able to get more pictures tomorrow, and I'll get it out in the sun and take lots.The cylinder looks to me to be 1840-60, probably American. The other needs better images at perpendicular angles and with better back-lighting. Like this:
Thank you so much, this is much more than I knew before, so I really appreciate your help!I can see that the lip is applied. That suggests a date prior to about 1880, but not by much. These flat lips are commonly tooled from the glass of the neck, a later innovation. The flat lip without overhang to anchor a wire bail suggests to me that this demijohn was not intended to contain wine or other product of fermentation. I don't think it's French or German or Low Country, but may originate in Eastern Europe. Not much more to speculate about this bottle.