Arthur Greenberg, a chemistry professor at the University of New Hampshire, will present a Wednesday, Oct. 12 UMaine lecture on the history of chemistry and alchemy.  Greenberg’s lecture, which will feature the use of illustrations and anecdotes, is scheduled for 6:45 p.m. in 316 Aubert Hall. The talk is UMaine’s third annual ChemFest lecture, part read more Illustrated lecture on the history of chemistry and alchemy