Every once in awhile in census records I see an occupation listed that is not common today. A good example is a person who lists themselves as a "scavenger". One would think perhaps this could be an alternate use for a person who may be a junk dealer.
However, I have found an alternate list for Scottish occupations, which lists a scavenger as a person who was a street sweeper.
Don't be overly impressed if you see someone listed as a scholar, this lists indicates that would be a child who is attending school, not the graduate of worthy abilities.
It's an interesting read, hope you enjoy the list!
http://www.scotsfamily.com/occupations.htm