San Francisco Bulletin, March 19, 1890. Woah: murder charges for a septicemia death? (I assume that’s what’s going on here). This blue gum thing was huge from the 90s through the ‘Teens. Earliest reference I’ve found to it was in an 1888 medical journal. White people either write it off as a black superstition or, if they believe, invoke the authority of black folk knowledge. Awful lot of medical men are among the believers too.