dutch and brits both were heavy gin drinkers * (still are )-- gin and tonic and a bit of lime was a long time tropical favorite "health drink" -- local water was often germ tainted * and could cause illness if drank straight ----so they drank gin tonic water and lime ---- the alcohol in the GIN killed the germs as did the acidic juice of the LIME as well , the tonic had quinene in it to help fight off malaria and prevent cramps as well (due to tropical heat muscle cramps were quite common) ---plus the booze helped the colonial master's unwind after a long day of dealing with the locals. -- square black glass "case gin" bottle --1800's as said befiore.