Mathematicians born on this day:
1735 : Lorgna 
Mathematicians who died on this day:
1779 : DArcy 
Charles Babbage  George Box  Dominique Cassini 
Theorem of the day from Robin Whitty  Mathematician of the week 
Charles Babbage (1791  1871)
... it is said that he [Babbage] sent the following letter to Alfred, Lord Tennyson about a couplet in "The Vision of Sin":
Every minute dies a man,I need hardly point out to you that this calculation would tend to keep the sum total of the world's population in a state of perpetual equipoise, whereas it is a wellknown fact that the said sum total is constantly on the increase. I would therefore take the liberty of suggesting that in the next edition of your excellent poem the erroneous calculation to which I refer should be corrected as follows:
Every minute one is born
Every minute dies a man,I may add that the exact figures are 1.167, but something must, of course, be conceded to the laws of meter.
And one and a sixteenth is born
Charles Babbage and his Calculating Engines
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This page is a copy of the one at: 
School of Mathematics and Statistics University of St Andrews, Scotland  
http://wwwhistory.mcs.standrews.ac.uk/Day_files/Day1018.html 