As he walked through the exhibition that day Galton came across a weight-judging competition. A fat ox had been placed on display, and members of a gathering crowd were lining up to place wagers on what the weight of the ex would be after it had been slaughtered and dressed. For sixpence, you could buy a stamped and numbered ticket, where you filled in your name , your address,and your estimate. The best guesses would receive prizes.