apparently was the main ingredient in Holtermann's Life Preserving Drops - but it didn't prevent him from dying at age 47
http://www.sl.nsw.gov.au/blogs/holtermanns-great-r...
Apparently also his photographs of Hill End are an historical treasure trove
http://www.sl.nsw.gov.au/stories/holtermann-collec...
Clearly I need to take time to look around the town next weekend (and clearly also I am interested in fellow apothecaries)!