It's amazing how many interesting things you find inside older dry stone walls. In the process of taking a wall apart here in Ontario, before we begin to rebuild it, we'll often come across an empty bottle of some sort.
The bottles come in quite an assortment of sizes and colours. Most of them are very small and almost always empty. Some of them look like medicine bottles but most of them look like they held booze.
I can only conclude that back when the walls were being built a lot of the old wallers must have not felt very well or maybe just liked turning to the bottle to get through the day.
This one I found was full. I thought about taking a sip or two and then putting it back in the wall. But then maybe I'd need to look for a bottle of medicine.