People were always dubious of my claims that a neighbor's tree produced both oranges and lemons; I did not realize that this kind of intentional grafting was th

People were always dubious of my claims that a neighbor's tree produced both oranges and lemons; I did not realize that this kind of intentional grafting was the likely cause (or that it was so relatively common). Strange the things I just took for granted in the days before there was an Internet that could be used to easily investigate.