Sentence:  Then again farmers are shamefully, lamentably, sometimes almost ruinously <WSD>humbugged</WSD>. All classes it is true are <WSD>humbugged</WSD> to a certain extent, but farmers in my view suffer themselves to be fooled and swindled in this respect to a greater degree than any other class in the community. They are <WSD>humbugged</WSD> in seeds, <WSD>humbugged</WSD> in manures, <WSD>humbugged</WSD> in agricultural implements, <WSD>humbugged</WSD> by agents, <WSD>humbugged</WSD> by patent peddlers, <WSD>humbugged</WSD> by store-keepers, <WSD>humbugged</WSD> by politicians, <WSD>humbugged</WSD> by corporations, till finally, some of them are in danger of becoming little less than humbugs themselves. 
Meaning of the word marked with <WSD> tags:  To play a trick on someone, to cheat, to swindle, to deceive.