thanks Fr Steve-- one of my favorite cook books (Joy of Cooking) has a section on "know your ingredients" and it covers sweeteners, (sugar vs corn syrup or molasses, or honey, or treacle) and the differences between white, lt brown and dark brown sugar, but not between cane and beet. 
here on the east coast, Domino a cane sugar producer is a dominate brand, (but i often by grocery store house brands) down in animal safari, buried back about 8 or 9 pages, is a thread called Croc's his and hers--(or something like that--which leaves the animal world, and starts discussing sugar, and then, like many a post changes topic several times before it ends --you could look it up if you are interested. )
EDIT or follow this link
http://wordsmith.org/board/showflat.pl?Cat=&Board=animalsafari&Number=70363