Ford, in fact, doubled the difficulty. Not only did Borrow feel that his book must create a living soul, but the soul must be heroic to meet the expectations of Ford and the public. The equestrian group had been easy enough--himself mounted on Sidi Habismilk, with the swift Jew and the Gypsy at his side--but the life of a man was a different matter. Nor was the task eased by his exceptional memory. He claimed, as has been seen, to remember the look of the viper seen in his third year. Later, in "Lavengro," he meets a tinker and buys his stock-in-trade to set himself up with. The tinker tries to put him off by tales of the Blazing Tinman who has driven him from his beat. Borrow answers that he can manage the Tinman one way or other, saying, "I know all kinds of strange words and names, and, as I told you before, I sometimes hit people when they put me out." At last the tinker consents to sell his pony and things on one condition. "Tell me what's my name," he says; "if you can't, may I--." Borrow answers: "Don't swear, it's a bad habit, neither pleasant nor profitable. Your name is Slingsby--Jack Slingsby. There, don't stare, there's nothing in my telling you your name: I've been in these parts before, at least not very far from here. Ten years ago, when I was little more than a child, I was about twenty miles from here in a post chaise, at the door of an inn, and as I looked from the window of the chaise, I saw you standing by a gutter, with a big tin ladle in your hand, and somebody called you Jack Slingsby. I never forget anything I hear or see; I can't, I wish I could. So there's nothing strange in my knowing your name; indeed there's nothing strange in anything, provided you examine it to the bottom. Now what am I to give you for the things?" (I once heard a Gypsy give a similar and equal display of memory.) Dr. Knapp has corroborated several details of "Lavengro" which confirm Borrow's opinion of his memory. Hearing the author whom he met on his walk beyond Salisbury, speak of the "wine of 1811, the comet year," Borrow said that he remembered being in the market-place of Dereham, looking at that comet. {30} Dr Knapp first makes sure exactly when Borrow was at Dereham in 1811 and then that there was a comet visible during that time. He proves also from newspapers of 1820 that the fight, in the twenty sixth chapter of "Lavengro," ended in a thunderstorm like that described by Borrow and used by Petulengro to forecast the violent end of Thurtell.