Postcard from Peter Guthrie Tait, to Charles Vernon Boys, Science and Art Department, South Kensington, London Thanks Boys for his letter and he will see from Tait's paper in press that Tait has made a golf ball travel 30 yards from a bow, with 8 feet droop in that distance when it had no rotation. He is starting off to St Andrews with a specially devised and adaptable new golf club which will mean that 'Every man [is] his own Caddie'. With a postscript question: 'Why does a top, when driven on, come back for another blow, even when its axis is vertical'. 28 July 1893