User talk:Johnsonman1234

March 2014
Hello, I'm Howicus. I wanted to let you know that I undid one or more of your recent contributions to Hydrogen sulfide because it did not appear constructive. If you would like to experiment, please use the sandbox. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks! Howicus (Did I mess up?) 22:00, 4 March 2014 (UTC)