

I was the headmaster for a boarding school at HoughtonleSpring, a coal mining area near Durham, England. I published a table of all the prime numbers less than 60,000. I determined the natural logarithms of 2, 3, 5 and 10 to 137 places.
I am best known for my calculation of pi to 707 decimal places in 1873, using the formula: Unfortunately, the mathematician Ferguson proved in 1944 that I had made an error in my approximation for pi in the 528th place.
