Because there was a shortage of cryptographers, the three Services were asked whether there were any among their recruits who had a cryptographic background, and the museum keeper was one of those discovered in this way because he had described his occupation as that of a ‘cryptogamic botanist’. When he told me this my comment had been, ‘The silly idiots, they ought to have known that it meant that you had a secret wife!’ He gave me a most curious look—it was some time afterwards that I discovered that although he was indeed married, he also maintained a clandestine ménage.
