  == 1815 date for invention added ==    I added the first five that came up (for the invention being in 1815 - I remember it from school).  There appears to be no dispute about the date as far as I can deduce.  Do I  still leave the ..citation needed.. after?  (sorry can't remember the exact nowiki config.  Newbie apologies)  PS is there a limit to how many citations are considered enough?  If 1's ok when it's reputable, can someone replace all five with this ............   http://www.bbc.co.uk/history/historic_figures/davy_humphrey.shtml ............  BBC is considered reputable round here, but it ain't foolproof....  ttfn   