One says Castor.. Castor oil? The rest no clue.

Found this Soda Bottle Fragment from a Soda Company founded in Augusta GA 1850s- Early 1900s. however, I found it in the river bed by an old textile mill in northern England. Pretty cool evidence of the trans Atlantic cotton/textile trade.

Can anybody explain to me what this might have been used for?

ive always been extremely interested in this hobby, but this was my first time doing it! i got the chance today as a part of my job for a conservation crew :)

all of these were in a riverbed of a wetland that’s been a pretty historic unofficial dumping ground since the 1800s.